How can I improve this? I'm not confident in my use of anatomy. I particularly mean the yet un-penned part, but constructive input for any aspect of the drawing is appreciated.
P.S. The figure is supposed to be Blind Melon's singer Shannon Hoon, of whom I've previously posted a sketch. Unlike the last sketch which was from a photo, this was drawn from imagination. The drawing is intended to take after the music video for the song No Rain, and I want the finished piece to have the iconic Blind Melon butterfly girl and ideally the other band members.