On-screen Tattoo HUD
As he tattoos and talks you through it, you see on screen the voltage, the ink and the exact settings he's using at each moment. So you don't miss a single detail.
+2000 students118 joined last week
Build a portrait with sculptural volume. Learn to organise your greys, work in layers and preserve the highlights as you follow a full session with Charly, from the design to the finishing details.
From inside · What you'll see, step by step
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The same interface and the same syllabus you'll have inside. Check the quality of the lessons, the content and how easy the platform is to use, and watch a full lesson for free while you're at it.
Watch preview nowLearn what to adjust and how to apply it to your next tattoo.


What you'll see, in the order it happens. No loose clips without context. The whole piece from start to finish.

Reading the area to be tattooed: lights, shadows and volume.

A clean stencil and a gradient map to break tones into sectors.

Silhouette and general volumes with pure black.

Round magnum from larger to smaller, applying margins.

Shader: marks and effects. Focus on eye-nose-mouth.

Whites applied at the end and a hierarchy of planes.
This course comes with 6 months of access to the Stencil Generator: upload your reference and download a faithful stencil, value map included, ready to print and transfer.
Every tattoo you do starts with a stencil. That is why it is included: the slowest, most tedious part of every session, solved in under a minute.
ReferenceStencilDrag to compareGenerated with the realism engine. Untouched.
ReferenceStencilGenerated with the realism engine. Untouched.
Breaks your reference down into values instantly. Unlimited: it never spends credits.
Stencil Generator
6 months of accessValued at
216 $Today, with your course
IncludedIt activates on its own with your purchase: 30 stencils a month and unlimited gradient maps, nothing extra to pay.
True to your reference
The stencil does not move a single line or reshape a feature: same proportions, same face.
Detects tonal values
The gradient map translates your reference into light, midtone and shadow zones you can read at a glance.
Built-in retouching
Brush and eraser over the reference, with adjustable opacity, for the last 5% that is always yours.
In your browser
Phone, tablet or computer. Nothing to install, no extra subscription.
months of access
stencils a month
extra fees
Alongside a complete opaque-grey sculpture masterclass, you get three months of reviews with Charly, Q&A sessions, the Stencil Generator and material to practise. Everything you need to build volume and portraits with a method you can repeat on every skin.
More than ten hours with Charly building a sculpture-style portrait from start to finish, skipping no part of the process. You'll see how grey is worked as a value and not as a shadow: the exoskeleton first, then the layers leaving room so the skin holds up, and the whites at the end. Every decision (anatomical reading, mixing the opaque greys set, needle sizes per plane, layers and highlights) explained at the exact moment it happens, so you internalise it and come back to it with every client in this style.
Declared value: 216 $Each month you can send Charly a photo of a tattoo or a practice piece. He analyses it privately and gives you an answer: what to change, what to refine, where to take it next. Direct feedback. Three months with his eye on your work.
Declared value: 324 $Send in doubts or questions about technique, clients, business, anything at all, and every 1-2 months we'll record a session working through them. You'll also get access to the past ones.
Declared value: 119 $A pack of 100 sculpture images and references for your designs and practice in opaque greys. To train your reading of volumes, planes and lights without ever running out of material to practise the style with.
Declared value: 49 $When you finish the training, we'll instantly generate a digital certificate issued by Masterink with a unique ID. If you're in the European Union you have the option to request a physical copy for an extra.
Declared value: 31 $Upload your reference and download a faithful stencil with its value map, ready to print and transfer. 30 stencils per month for the next 6 months, in your browser and with nothing extra to pay.
Declared value: 216 $Not just videos. A platform built so you learn without getting lost.
As he tattoos and talks you through it, you see on screen the voltage, the ink and the exact settings he's using at each moment. So you don't miss a single detail.
You take notes inside the video. Each note stays pinned to the exact minute and you always come back to it from your account.
You ask under the video, like on YouTube. A direct answer from Charly or the team by text or audio. It's not a bot.
Sheets, stencils, references and PDFs from the training in one click. Take them away to work offline or print them.
Open a lesson, prepare your next practice piece and track your progress. Take a look at the academy you’ll use.
The video and curriculum side by side. Choose audio and subtitles, save timestamped notes and ask questions below the lesson.
Everything that shows up in the session, packed into downloadable files so you can replicate the process in your studio.
Ready to print at real scale.
The original image and its variants in high resolution.
Everything used in the session, listed and available.
The finished piece, healed and unfiltered.
Charly Ávila

A specialist in realistic portraiture, micro realism and black & grey. At Masterink, he shares the way he works: the full session, the decisions and the details that shape every piece.








Charly has tattooed
Daniele M.
Seminar From 0 to PRO
By far the best online course, no contest: nobody explains like Charly. He has an incredible level of knowledge and explains it in a simple, direct way. I recommend it 1000%.
Verified purchase
Alexander M.
Micro-Realism Opaque Greys
Worth every euro, highly recommended.
Verified purchase
Javier G.
Nano-Realism in Color
He clearly explains how to adapt complex designs to very small sizes without losing definition or durability. The part on color, saturation and needle choice especially stands out, with practical tips you can apply from the very first moment.
Verified purchase
Juan H.
Micro-Realism Opaque Greys
A very well explained masterclass: the concepts and techniques are really easy to understand. I find it super complete and it covers the different parts of tattooing. Highly recommended.
Verified purchase
Sergio
Realistic Black & Grey Portrait
Super well explained.
Verified purchase
Nello L.
Sculpture Opaque Greys
Great course, he explains everything down to the smallest detail.
Verified purchase
Jose S.
Sculpture Opaque Greys
Amazing. The filming method and explanations are perfect, really easy to follow for anyone who wants to improve and take their work up a level.
Verified purchase
Oscar G.
Academy student
A beast with the machine, he explains calmly and takes his time. I wish I had the money to buy every masterclass, because I'm opening a tattoo studio and it would come in really handy. A beast, seriously. I hope I get to meet you in person one day.
Verified purchase
Adrian M.
Seminar From 0 to PRO
The course is really worth it. Little by little, with Charly's tips, I'm polishing my skills and making increasingly realistic pieces. Very happy with the course.
Verified purchase
David E.
Realistic Portrait Masterclass
Thanks, I really liked it, well explained. Keep making more.
Verified purchase
Javier D.
Academy student
I haven't finished the course yet, but in the little I've done I've already learned some really interesting things.
Verified purchase
Digital diploma when you complete the course.
CertificateAwarded toYour nameFor completing the courseOpaque Grey Sculpture Masterclass
Taught by
Preview · The certificate is awarded on course completionCertificate. Awarded to Your name. For completing the course Opaque Grey Sculpture Masterclass. Preview · The certificate is awarded on course completion.
Digital certificate included on course completion. A framed physical copy is available for an additional payment, with shipping within the European Union.

Opaque Greys Sculpture Masterclass
4.8 / 5
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100% secure payment30-day guarantee*
“Amazing. The filming method and explanations are perfect, really easy to follow for anyone who wants to improve and take their work up a level.”
* Full refund within the first 30 days if you've watched less than 20% of the course content. Email team@masterink.art and we process the refund.
For any level, as long as you have the minimum technique of line, shading and gradients (what you see in the beginner seminar). With that grounding, this session shows you how to build a sculpture-style portrait in opaque greys, with a method, from the exoskeleton to the highlights.
How do I preserve the base when adding another layer?