Measure the circumference of your head. This is important because you will want the mask as tight as possible so that it does not get in the way while you are competing in the ring.
Decide the main colors that you would like the mask to be. You can create a design with multiple colors, but try to keep the mask symmetrical in the design.
Cut a piece of leather to the circumference of your head. Place that piece over you face to create spots for your eyes, nose, and mouth. If you have long hair, you will also want to keep openings for that as well.
Use small pieces of leather to add designs to the mask, such as shapes over the eyes and mouth.
Sew the pieces on using a sewing kit with a string and needle. Weave this tightly so your mask does not come apart in the middle of a match.
Add a Velcro chin strap to add extra protection. The mask is also used to hide your identity, so keeping it on for that sake is important as well.
Keep the back together with woven shoelaces. This will allow you to make the mask tighter as well as to prevent leather stretching when you are trying to pull it off.
Try the mask on and make sure that everything fits snugly. Make adjustments as needed.
Remember to keep the idea original so that you will stand out in a wrestling match.