After creating the rolled magazine pages, glue them onto your canvas by applying a small amount of glue to the bottom end of the rolled paper. You can either roll a bunch of paper at once or work one at a time. Either way does not matter. The choice is yours.
Continue adding the rolled pieces of paper until you complete your design. If any of the rolled pieces of paper are too large, simply cut them down to size with a pair of scissors. It's all a matter of eying which pieces need to go where.