1. Make sure to clean your frame with an oil and dirt remover. If your frame has any of kind of oil remaining the grip tape will not stick to the surface.
2. Dry and remove any excess of your desired cleaning product (Step 1) from the frame.
3. Apply some heat on the grip tape before and after the application using a heat such as blow drier or heat gun
Disclaimer: Do not leave the heat for too long or use the heat to close. It may melt the grip tape.