the head you designed has a strong shape, so I would suggest taking that strong shape and copying it for the body. this took 5 minutes to come up with, and I start with the green square and create different shapes and sizes. you can then add a waist, arms, legs and mix and match. stick to the strong shapes until your happy with one and then take it and draw the final body to attach to the head. I'm not sure if you were asking for this so sorry if you didn't want it. hope it helps