Blue looks the best! XD
At first I thought that "green" was a girl too [sorry if really is ;P].
For the "pink" I guess you gave her a too sharp, thin chin - guess it's because of drawing male characters too often :). A small, rounder one would definitely done the trick.
You're good with contrasting which looks very good on "Blue" and "Green".
Keep it up :)
Thanks! It's seems Blue is people's favorite here xD
Haha, Green may look like a girl, but it's actually a boy, so you guessed right ^^
Ohh, the chin xD I wondered if someone would feel "uncomfortable" because of it, haha. The fact you pointed, that I draw male characters too often, may be the reason, and perhaps an influence of CLAMP's works (their male characters, probably), because when I looked at this sketch for the first time, I though "OMG, why is it so CLAMP-ish?!" UASHHUA, maybe I "absorbed" the style a little, since I'm a fan xD
But thanks for the tip, I'll try to make a small, rounder one when I draw girls next time.
And thank you very much! I'm glad that the contrast is visible =D