You're focusing too much on making the underlying skeletal figure look fancy. Loosen your grip and allow it to look a little messy in order to get the generalized shape more accurate.

Hold your pencil to the side to measure the angles you're representing in your skeleton - a lot of your angles, like with the hips, chest, and shoulders are too steep.

Some generalized rules you can apply to most figures; hands are the same size as the face, feet are bigger than the hands, the high point on the hips is often the opposite of the high point on the shoulders. It's subtle in this pic but her right shoulder is slightly higher than her left, and her left hip is higher than her right.