Cut out the letter you wish to use from the alphabet stencil. Use double sided tape to cover any detailed areas of the stencil that may lift when spraying. This will help to ensure clean lines when you spray.
Peel the backing off the double sided tape and stick the stencil to the leather face up.
Move the wallet to a well-ventilated area and place on top of newspaper or a dust sheet.
Apply masking tape all around each edge of the stencil and ensue you completely cover the remainder of the wallet to protect from spray mist.
Spray with two light layers of Rust-Oleum Flexible Fabric Paint, allowing to dry in-between.
Once dry, peel the stencil away from the leather and voila!