Thank you for your suggestions about the icons. Clow is actually supposed to be lighter than Yuuko--I wanted it to seem as though he was cut off from her, as he was in the original image. There's currently a watercolor texture on "soft light" over him; when I take it off, it appears as though he's standing next to her, which in itself is a nifty effect.

Do you think I should do that instead, and paint in a better background?
Also, here's the Sakura icon without the flower petals:

I'm trying to block out Syaoran's hair, since it's too spiky in this image--it looks very cartoon-like, even when I color it. I'm thinking that I'll either add in the panel where he's looking back at Sakura, or draw in some...wisteria. I'll definitely try to darken her eyes, though.