Practice makes perfect is a myth as perfect is unobtainable. Much more accurate is practice makes permanent in that the motor skills you’re practising become so ingrained and natural that nothing can get in their way. One of the biggest dilemmas we face in sport is that to get something to become truly permanent you have to practice it A LOT (estimations suggest around 20 hours a week) and yet doing the same thing over and over will soon become boring. The solution is not to compromise on the amount you practice but vary the types and intensity of the training blocks. One of the simplest ways of doing this is to introduce some mental rehearsal into each practice session where you are either watching clips of how to do it correctly or imagining the same.
Another excellent way of preventing boredom is make sure every training session is challenging. If you don’t already know how to do this then I suggest asking how to add Pressure and Harder Practice to your current regime. It’s gold. GJM