If you wish to upgrade your Vinyl, select the "CHANGE VINYL" BUTTON, it will take you to the "CONTACT PAGE". Once there complete the name, email & phone number fields & in the COMMENTS field enter the type of vinyl and title of the shirt(s) you would like it applied to and press send. THEN, on the CHECKOUT page scroll to the "ADD TIP BOX" and select "CUSTOM TIP". Enter the price of the desired vinyl for the quantity of shirts you wish to have changed and continue to checkout as normal