I want to paint a wine glass for a Christmas present and I have a lot of cheap acrylic paints from Walmart (Plaid) but I don't think it would stay on the glass. So is there anyway that I could paint it using the paint I have and then just use something over it to allow it stay and be water proof. If not what paint should I buy. I wanted to paint on the inside of the glass instead of the outside...is that allowed? lol. Thanks!