lol..I think my favorite part of that pic is your signature x.x
mine just liooks like Rsdjfel Bdfjsdlfnet and I usually throw a nifty slash through it...or make a big cool ass smiley in my ''i'' It gives it the effect of awesome'ism and slashism and sometimes but not often what the pros call 'chicken scratch'...i believe that's art talk for "badass dude"
But that's just my opinion.
P.S..IMO trace it and just do a nice light sketch with a light source, define her chest a bit more and give the wings some depth. THEN i think it would look really good...Your idea of color on her, ruins the drawing...a lot.
I have to agree on the wings. Maybe they should've been placed a tad higher, and given a stronger bone structure. The hands also need some minor work on, maybe drawn in a different position. Other than that, great drawing