Obviously you want to be practicing the right throwing techniques. You should also learn how to practice the right practice techniques.
Research by psychologist K. Anders Ericsson indicates that anyone can become a master at any task if they devote 10 000 hours of deliberate practice. Um, that’s a lot of hours. What I want to focus on here is not the volume of practice, but the words “deliberate practice.” Even putting in the hours is not enough. It must be “deliberate” practice. If every hour you invest in throwing is deliberate practice, you will improve much more quickly that someone who just dicks around with the disc for twice as long.