Rendering hands into product shots

It looks like a plastic hand.
You can do 2 things:

  1. Use stock photography. For example, we did a pregnancy tester so we looked up pregancy tester or diabetes lancet devices to find acceptable hands holding actual products that were the approximate size.
  2. Take your own photos. Find somebody with nice hands and have them hold a physical prototype or something roughly the same size. If you set up the lighting correctly you shouldn’t have to do too much PSD.