The anatomy is rather good in all areas except for the navel (needs to be about midway between the nipples and the crotch, though this isn't true for everyone) and that, my god that FACE. I know anime is a popular style that's proved its appeal time and time again, but if you're going to draw a realistic body like that, the head should try to match it. Just tone down the cartoonyness of those eyes like 50%.