(artrage studio pro required)
how I simulate a wet on wet watercolor effect:
I lay some watercolor down with a watercolor brush.
then use a wet blender palette knife.
Then use a sticker brush by Juz called Triangular Chaos to simulate the bleeding effect.
Lastly, I also have an air brush setting with which to add a little extra color in places if desired. here is a link to the presets in an arpack to automatically install them. also a watercolor paper setting.
here.
I did not include the sticker preset by Juz, because that isn't mine, but it is available in art supplies or made easy to reach in this post.
or below are the three presets and the preset by Juz in her grunge set. If you already have Triangular Chaos in her grunge set you won't need that one.