We wanted to try this technique for a long time. Squeeze Elmer's glue on paper and wait until it dries. You can draw curvy lines like I did or draw flowers or stars or any other shapes. When glue is dry, paint over it with food coloring or liquid watercolors using paint brushes. We had a few attempts with food coloring mixed with water but it always turned out too pale. Then we tried to squeeze food coloring on paper right out of the tubes. Here is what we got.