Nice. Course, there are a few proportional errors.
Lemme try to explain how I generally do female proportions. I could explain with a picture, but a giant paragraph would be more fun. The torso (meaning from crotch to shoulders) is the height of three hips. The bottom hip is the actual hips and the top 1.5 hips are the ribcage (it's shaped like a shield). The middle .5 is squishy stuff where the character can bend. The breasts are generally positioned at about the middle of the ribcage. When animating or posing a character, it helps to draw the spine first. The spine goes from the back of the head down the back of the ribcage object, through the back of the hips, and comes out as the tail if there is one. The shoulders are "stuck" to the sides of the ribcage, and remain below it's top unless the character bends her arms upward, in which case they "curve" around the top of the ribcage (the arms don't actually bend up, the shoulders do). The legs go down about as far as the distance from the crotch to the top of the head, meaning the crotch is the halfway point in the character's height. Make sense?