Supplies for the 3-D Frame: Paper Cutter X-acto Knife Scoring Tool Ruler
Pic. 1. For this tutorial, I chose not to stamp the image, so you will see it clearly. Start with a 41/4 x 51/2 paper. I used a 21/2 by 21/2 Post-it-Note to mark the dots fo my corner. I only used the Gel pen so you can visibly see it. Otherwise, use a pencil so you can erase it after.
Pic.2. Score the sides using a ruler and a Scroring tool.