Zealot

Hey guys! I'm writing to ask for some advice for papercraft design! My friend is a designer and we have been thinking about making a poseable hockey goalie craft with very simple articulation. However we have one problem: she’s worried that the arms won’t hold poses and will always fall down and flop around. See the attached photo for the pose/style.

Using the glove arm as an example, we want to make the shoulder rotate up and down and right now we're thinking just a simple cylindrical pin joint style. Do you have any tips we could use so that it holds the pose and doesn’t sink or flop?