Looks nice for a first character, but a few pointers.
1) The body is too square. The shoulders should be quite wide, then the body should go in, like a v (only less pointy). It should then widen again at the hips.
2) Women have these things on their chests called breasts.
3) Look at some pics of women with and without clothes. If possible, find a modelling reference to trace. It's also worth noting the differences (other than the obvious) between the female and male body. At the moment, yours looks too male.
What modeller did you use?