Step 1: take a sheet of paper and add a design.
step 2: start with pattern side up and vertically in half.
step 3: open sheet of paper with pattern facing out. fold left side vertically to center fold and right side to center fold. your paper should not be in vertical quarters.
step 4: looking at the paper vertically and plain side up, fold the quarter on the left in half again. repeat on the right. you will still have four vertical sections, but the section on the right and left will be smaller than the center.
step 5: place paper pattern side down. fold left corner closest to you to the last fold line on the right, and then fold the right bottom corner up closest to you and tuck under the left corner. tuck the pointed corner up.
step 6: rotate the sheet, repeat on the other edge.
step 7: pull the folded sides so they can stand at a 90 degree angle.
step 8: your end shape will have a flat section and four sides at 90 degree angles.
what do you get?