I made this for a bit of hand sculpting practice.
I figure it makes for a cool Halloween decoration at least.
Some slicing may be needed before printing since it doesn't have any flat areas. Meshmixer is a good tool for this.
I would do it myself, but I made this while at work and I don't have the right programs to prepare it fully.
Use it for whatever purpose you see fit.
-Added V2, which adds some slight corrections. The back of the hand was a bit too flat in the first version.