Thickening of the body of the penis

Hey guys, Im new here and I would like to know how to thicken the penis body, because when I do the jelqs exercice it usually stays with a big head, and I would like to have it thicker in the body of the penis(the rest). Because of this my penis is big headed.

26 Dec 2016: BPEL 14cm x 10cm - 5.5’ x 3.9’
Primera meta- first goal: BPEL 17cm x 13.5cm - 6.7’ x 5.3’