How to create a great Filter Sketch - G'MIC-QT

TeaMouse · **Joined:** Jan 01, 2026 **Posts:** 733

Study in creating a great Filter Sketch!

Attachment:

GC - Filter Sketch-01.png [ 548.73 KiB | Viewed 7328 times ]

In this study I will show you how to fix some of those problem,
in a simple and easy way. Plus, we’ll add some G’MIC-QT effects to make that filter
sketch of your standout over the others. Even thou this isn’t perfect; it will give you
a very good starting place for creating some great art work.

Attachment:

Filter Sketch G'MIC-QT.zip [2.22 MiB]
Downloaded 181 times

TeaMouse · **Joined:** Jan 01, 2026 **Posts:** 733

Attachment:

GC - Filter Sketch Curves.jpg [ 409.47 KiB | Viewed 7270 times ]

About the example shown here, in my filter sketch I used a Curve Adjustment
layer to move and adjust the darkest or black areas in my filter sketch. What it does is give you
a little more details by changing how much black is being shown. The Curves setting shown
here is another option you can use in the tutorial for step 10 (a).

TeaMouse · **Joined:** Jan 01, 2026 **Posts:** 733

Attachment:

GC- TeaMouse Fliter Sketch Example.jpg [ 1.65 MiB | Viewed 7237 times ]

This is an example of what you can create with this Filter Sketch Tutorial.
Again this is just an example and not the golden rule. But a good place to start with.

TeaMouse · **Joined:** Jan 01, 2026 **Posts:** 733

Attachment:

Gc-Filter and Cross Hatch - 01.jpg [ 1.04 MiB | Viewed 7128 times ]

This image has the Filter Sketch as a base and then a cross-hatch sketch
above it. Blended together only using blending modes, and opacity adjustments.
Because of the black jacket reflection, and the face and hands are very light and faint
in details. Otherwise, it wouldn't work with only sketch ideal. Hope this helps.

This frame is for a 6" x 9" @ 128Ppi - PNG

Attachment:

Leather Brown - 01.zip [3.33 MiB]
Downloaded 236 times

Issabella · **Posted:** Sat Sep 12, 2026 9:06 am **(#5)**

I really enjoyed following your tutorial, TeaMouse. It’s another gem.
Now I don't know which of the two methods I like better.
I have had to reduce the size to be able to post the outcome.
Thank you so much for it, and for the time and patience you put into preparing this step-by-step tutorial.
Many thanks, TeaMouse. :tyspin