This set of hands were from two different models. I am using a right and left but it is OK with me if you want to use two rights or two lefts.
I found these little strips of heavy watercolor paper that I had saved for ....in case.
They are perfect to make arms with. So, I first glued the hands down and then I sketched an arm shape.
II played with some skin tone paint and of course added white and red. I was just trying to make a matching flesh. And you will notice I change the size of the lower arm section.
Then I used a brown watercolor pencil and went around the arms.
Using Golden gel matte medium, I blend and smudge the watercolor pencil. Now it is permanent.
The gel medium does that.