Hi!
I've tried @Hayte's great guide on page 7 but I'm far from a Gimp expert.
I get stuck at step 7, actually putting the colors on the image. I feel like I'm really lost with all these "mask layers" things and stuff. Too bad, cause I really like the first part, the edges detection look really solid.
I have a custom portrait that I'm trying to get watercolor versions for.
Would anyone with better skills than me be so kind to help me with it? Here it is: