: Take the second paper and place it vertically against the end of the horizontal paper to form an "L" shape. Ensure the gummed (sticky) side of the vertical paper is facing you and positioned where it will overlap the first paper. : Once the "L" is formed, you can
: Once the "L" is formed, you can fold the vertical paper over to extend the length of the horizontal one, or trim any excess paper if you are looking for a specific custom size. Alternative DIY Options