I'm trying to figure out how to paint digitally, and the course I'm looking into is tackling masking for painting next. It's using Photoshop, but I'm using Krita. Photoshop has mask layers, but if Krita does have them I can't find them! I'm trying to do something like the mask in this video (2:18-2:37).
If anyone knows how to do this in Krita, or in another cheap/ free program I'd be really grateful!