Step 1: Measure Your Staircase
Trim the paper along the crease and square up the right side if needed. This will be your template for cutting out cardboard “presents” going down the staircase.
Step 2: Cut Out Cardboard Presents
For presents wider than your template: Lay the template on top of the cardboard piece you want to use, lining up the bottom right corners. Lay a ruler along the bottom edge of the template and draw the bottom line the length you want on the cardboard. Sorry the picture is kinda blurry!