2nd time around with better results!!! Last year I had students do their piece on the theme of "Your favourite things" or "What do you love". This year I just let students chose whatever image they wanted.
Students layered cardboard onto a larger piece of cardboard (we talked about the importance of careful cutting and having more than 1 layer to create visual interest). This year students used glue sticks to place the tissue paper on their work (last year we used pva and it was super messy). For the final touch, I rubbed the metallic oil pastel over their work (last year kids went oil pastel crazy and when too much oil pastel is unfixable!)