Make sure your application area is clean and free of all oils, dirt, and cleaning product residue. I use alcohol wipes and let dry completely.
Slowly peel transfer tape away from the paper backing, making sure the vinyl sticker adheres to the transfer tape. If not, slowly replace the paper backing and firmly rub a squeegee or credit card across the transfer tape. Repeat until the paper backing cleanly separates from the transfer tape.
Hover the transfer tape over the application area positioning exactly where you want it to go. Slowly lower the sticker onto the surface from left to right (or vice versa) and rub it in place firmly with a squeegee or credit making sure you remove all bubbles.
Slowly peel the transfer tape away from the surface at an angle making sure the vinyl sticker stays on the surface. Let cure for 24 hours before heavy use.
Make sure your application area is clean and free of all oils, dirt, and cleaning product residue. I use windex or a similar cleaner and wipe off with a microfiber cloth.
Completely wet the application area with soapy water. I use a dollar store small spray bottle filled with tap water and 3-5 drops of dawn dish soap. Make sure it's completely wet; you can't really have too much water in this step unless the area you're using can't get wet.
Place the design where you want it, sticky side down. Use the water to position the design exactly where you want it then rub firmly with a squeegee or credit card to force the water from underneath the sticker. Start from the inside out making sure you rub every portion of the vinyl sticker.
When you're confident all of the water is pushed out from under the sticker, remove the transfer tape. Slowly peel the transfer tape away from the surface at an angle making sure the vinyl sticker stays on the surface. Lightly wipe remaining water from surrounding area. Let cure for 24 hours before heavy use.
A heat and cold cycle will help remove any errant bubbles. If it's a car window, the weather will do it for you. If not, try a light heating with a hair dryer and letting it cool, but be aware that too much heat can ruin the adhesive.