I recently got back into drawing myself. Got some great tips from some of the great ones on this site. But one of the simplest, was to check out the basics I had learned from long ago. Ya know, simple proportioning, anatomy, movement, etc.
Not all apply here, but the tip is still good.
Look like you've had some experience and/or classwork...cuz this very good for "just starting."
Things like this:
http://realcolorwheel.com/human.htm