That's good! Great work and see nothing wrong other than you might need to get used to using guidlines. I don't know if you do use them but it's still damn good!

Yay Winry! She's such an awsome character and I love her. Great coloring job!

mmm. everything is good, but her waist is very small! perhaps making it a smug bigger.....

Well, the colors are nice, but maybe she looks bad because of the way you scanned the pic..? She looks a bit twisted.. But otherwise , its just ok !

she looks ok to me ^-^ although i havent seen any full metal series *sigh* but anyways good work