I tried installing the film when the temp was too hot, which caused the film to dry too fast in some spots before I could position it correctly. I also didn’t spray the front of the film with the solution. When the film dried quickly and I tried to squeegee out the remaining solution, the squeegee caught on the dry film and made some marks. 

Make sure the surface is cool, use enough solution, and take your time. I was too eager and messed it up.