Use rubbing alcohol and a lint-free cloth to wipe off the jars. This is a super important step to get rid of all the oil, fibers, and residue on the glass to ensure the vinyl adheres well.
Use transfer tape to get the vinyl off the carrier sheet. Align the edge of the circle with the edge of the flat surface on the jar. Lightly lay the vinyl on the glass so you can still maneuver it if needed. Once the vinyl is in position, use your scraper tool to burnish down the vinyl. Slowly peel up the transfer tape at an angle. If any letters are coming up, reapply the transfer tape and burnish down those areas again.