I like the colors on the succubus, but her proportions are a bit weird. Her legs are very short and thick... not very attractive, IMHO. Also, her back leg is much shorter than the other one.
I think some of the graininess should be cleaned up for more smoothness and clarity. Her arms, the hair and the top of the scythe don't stand out against each other at all. The way her arms cross looks very strange as well.
Also, her face is a bit long for a female.
I made an edit to hopefully explain it a bit better.
Yours on the left, my edit on the right:
I tried to smooth it out a bit and fix the pose/proportions. I removed some of the hair for more clarity in the pose. I changed the foot in the front to stand on the toes in an attempt to fix the mismatching leg lenghts.