An article with a practical tip: how to fix bubbles in collage.
Sometimes, even with the best practices (glue on support paper and on collage paper, squeegee) you still get a pesky bubble or two. I usually just go ahead and work over them to see how nicely they want to play with the art.
BUT, in this case, I was using a thick wallpaper for an experiment. Note to self: Heavier paper may not cooperate when glued to lighter paper. Since the play was with the wallpaper, I made it work.
Here is one solution: LINK TO VIDEO Be sure to share and comment!