Soak a cloth in acetone.
Rub the cloth over the vinyl to clean it completely. Cleaning the vinyl will help create a permanent bond.
Apply the glue to the vinyl.
Press the vinyl into the area where you want to attach it.
Clamp the item and let it sit for at least 24 hours or as directed by the manufacturer. If the vinyl is small you can simply use masking tape to bond the pieces together. Vinyl glue takes longer to cure than other types of permanent glue.
Remove the clamp.