1Find the cell phone you want to make the case for, and a duct tape of your desired color and texture. Be sure to choose the right size of duct tape (generally the thicker/larger size is best).
2Cut approximately four strips of duct tape of equal length.
3Circle around the cell phone with the duct tape. Do this with the sticky side facing out.
4Cover the bottom of the cell phone with a strip of duct tape around 3 inches, 7.5 cm long, still with the sticky side facing out.
5Completely cover the sticky areas with strips of duct tape (sticky side facing in).
6Take a 10 inch (25cm) strip of tape and fold it in half. Trim away about 1 centimeter from the side––this will be the case's flap.
7Put an inch (2.5cm) of Velcro tape where you want the flap to sit on the cover of the case.
8Get the other piece of Velcro that is as big as the first piece, and stick them together.
9Attach the flap to the Velcro first, then bring it over the top to the other side and tape it down. If you don't have Velcro, you can use duct tape; just fold the ends so that you know it's the front.