Thoroughly clean and dry the surface that you are going to apply the decal. Slowly remove the backing off your Modtack so the decal is completely on the transfer tape. If the decal stays on the backing slowly roll the transfer tape back down and apply pressure on the area of the decal that did not come up and restart the removal process. Once the transfer tape is completely removed with the decal you can now apply it to the clean surface. Apply pressure then slowly remove the transfer tape to reveal your finished decal.