I’ve contributed some hand made pencil, charcoal and pastel textures to G’MIC for the Artistic Stylize filter. They will be available in version 2.9.7 in the main Artistic Stylize filter.
I am thinking of making a texture pack for them available on my Gumroad shop as well if you want to use them in the pattern fill method I describe here instead, but having them incorporated into the G’MIC filter makes it a lot easier and more accessible to everyone.
I tested them with the default settings and they work OK, but if you tweak certain sliders you may get a better result depending on your image.
The default setting gives a good result but I found that using the All X-Y Flips option gave a much better result in matching the texture to the values of the image you want to use it on. It seems to increase the value range of the textures and work better in my opinion.
Scale style to fit target resolution setting
Default this is set to 75%. On large images at least 2000px wide this is probably fine, but if you want the testure to look smaller you can scale it down. 30% is the lowest setting I tried that looked OK with smaller images.
Fidelity to target (finest)
Default is 0.5. This is probably fine on more photographic or detailed realistic CG renders.
If you want a more accurate result with running it on digital paintings try raising this value slightly. I tried it with 1 and that was OK.
Fidelity to target (coarsest)
I left it at the default setting of 2.
Fidelity smoothness (finest) and Fidelity smoothness (coarsest)
For Photographic and detailed realistic CG renders leaving these values at default values will probably be good because otherwise the result will look too polished. The aim is to get a nice textural pencil look. I did find however that on my digital paintings and less detailed or rougher pictures raising both of these values to their highest of 5 gave a much better result. It depends what sort of result you want.
And here is the result using the style variation and other settings I’ve described to preserve more details and get a smoother result:
Here are some examples of using the higher smoothing and fidelity settings on a rougher digital painting study I made.
With default style variation (no flips)
With style variation All X-Y Flips
I left all the other settings as they were, but don’t be afraid to try different things.