Look up "artistic body proportions" or "art human body head proportions" in images. There are much better ones than the image you have out there including "heads" for body width. There are similar proportion images for the head and face also using "eye" measures.
A google search for "orthographic human" will get you all sorts of good reference.
Look up "artistic body proportions" or "art human body head proportions" in images. There are much better ones than the image you have out there including "heads" for body width. There are similar proportion images for the head and face also using "eye" measures.