hope it works for you! and there are painting techniques you can use to give it that icey look
i guess great minds think alike
have never heard of glass paint, but if there is such a thing i'd say go for it and try out some techniques on something small before you go for the big hands, and see what looks best for you before committing all the paint to the hands. can't wait to see how it comes out!
in the future it'd be fun to find a way to get it so that you'd be able to move the fingers of the hand, too