If you've ever watched a man wanking, it's quite different to what we as non penis owners imagine. As a woman my expectation is to wrap my hand around the penis with as much surface area as possible, but any man i've ever seen do it generally only down this for a moment. Then they switch to using thumb and two/one finger in a much more targeted way. My hand-job skills improved a lot when I figured that out, so see what he does, and then copy it with a little flair of your own!