I like this base for sprites. One thing on the female side view her kneck and shoulders don't feel quite aligned. It makes it almost look like she is really trying hard to shove her breats forward. Other than that, I reall do think these are a great bases. 
I agree with you on that, the proportion isn't quite right. But I think I'm gonna leave as it is because it's only template. Thank you for the feed back. I really appreciate it.