So, I'm decorating some class cider bottles. I've covered them in watered down pva glue and newspaper to give the paint something to grip to. I have then painted them white and then painted them all abstract and funky using acrylic paint!! I want to now make these waterproof as I wanto to use them as vases, is there some sort of waerproof gloss or varnish I can use on top of the design to firstly make it waterproof, but also to add some shine to it?