Thank you both so much, I'm so new to this that almost everything you say seems like a cryptic language, lol! I'm not a Diviant Art Member, I only know the basics in paint.net - I'm not sure what either of you said (Diviant - Krita?) but I'll research them for sure and see if I can figure them out. The tool I'm looking is called 'inner shadow 'in photoshop and it allows for all the textures and colors to be adjusted - like color burn, overlay, normal, multiply etc. I found a youtube video of the effect in photoshop that I'm hoping can be done in paint.net. I thought a watercolor brush would do the same effect, but maybe not. Although I love the idea of a watercolor brush too. Thanks again for your help