WC when you draw human type bodies do you draw the outlines and what not before hand, if you dont i suggest you do because once you get the hang of it it can make the drawings better. Here's a site that will help
www.ploykarbon.com . And Kawii the shading on the angel is great, i would shade my drawings but im always in a rush to draw the next thing. Also are you planing a career in drawing, i bet you could make it.