for one.. its cute... everyone loves cute icons and deviantart ID pics...
no just saying.. one arm looks a bit longer than the other... but other than that i cant see any problems with it... the shading looks a bit rushed... but its hard to tell
now with the good news
the eyes and the hair color are a almost perfect combination... they make each other stand out and that makes is look interesting and pleaseable to the eye
the clothing is awesome and so is the lighting,, the way you have put the word " hi! " at the top is a great thing as well
all in all.. great work...