I'm relatively new to Painter still, trying to make a switch over from Photoshop because Painter's tools are amazing.
So, I hunted and hunted to find the perfect brush to use to color my line art, which ended up being the smeary wet sponge. I put my line art layer into 'multiply', but the sponge doesn't pay attention to that. It colors right over the lines. Okay, so I figured I'd just leave that one on multiply and color on a layer underneath it. But when I make a new layer, the sponge doesn't do anything at all. On either layer.
What's even more fun is that after I delete the new layer, the sponge still won't do anything anymore. And actually, no tool will do anything.
I can get other tools to work both on the line art layer and on a new layer... so what am I doing wrong with the sponge?