Not bad but there are a few anatomy errors. The breast need to hang down no matter how perky they are, otherwise they appear to be one solid mass. Doing so create a sense of weight and volume, heck, large breasts can weigh about 10 pounds each. Also the right side of the hip is too low, I understand that her leg is out and it would cause the waist to pivot but the whole mid section need to tilt and the upper body needs to tilt to the other side to compensate for the uneven weight distribution. Also she has no collar bone.
A good practice when starting an image is to rough out the skeleton, do a figure sketch, it's important to capture the correct action of the subject first. It's important understand how each joint connect to each other and most important of all know where the spine is, If you can't tell how the spine runs down the body the entire image is lost.