First Sketch with Digital Paint

I made this image just yesterday. It's based on my first sketch from the previous post. I kind of skipped the tracing step, and went straight to painting. Alright, the painting was basically only filling the blanks with paint bucket tool. I'm still not brave enough to erase the outline.

The result is so very flat. I don't really have the ability to shade and highlight images, but will try, though. Will try the hardest. Hopefully it can be better. More 3D-ish. I'm a bit happy with red color on the heart. Very simple to make, too. I only use gaussian blur for the shade and highlight. No idea what to do about the wings. How do you make some wispy effect? Wispy is good for wings. Maybe airbrush from the brush preset with additional spatters can do the trick. This is the time to experiment ....