Hahaha man I was just thinking about that today! I’m already working on 3 other big comic projects right now but maybe I’ll just add this one on there too…..
Hey there! It was a little complicated and took some experimentation but heres the basic gist- I use two different layers that are overlaid on top of the whole piece, both are textures I made using charcoal on top of watercolor paper. I got the effect by messing with different layer styles and properties and opacities, in this case a color burn layer at 79% laid on top of a soft light layer at 19% - doing it this way meant i had to lighten the colors on the actual piece a lot and theres probably an easier way to do this, but experiment and see what works for you!
Hey! Thanks so much for your interest! It would depend on the subject and complexity but I’d be happy to discuss it further, shoot me an email at firstname.lastname@example.org with some details and we can talk some more!