Ok so I bought some canvases a few weeks ago intending to do hand/foot print reindeer on them but it has just occured to me that I only have the normal ready made poster paint, don't really have time to get acrylic paint and it all looks quite expensive. Will this work?? I saw somewhere that if you mix the paint with a little pva glue it gives it a shiny sheen, should I try this? Help!