I don't know what to do! Please help me!!!?

OK, I've been doing dance since i was 2. But I just recently started a new type of dance Scottish Highland. You compete and stuff. Well I like it when I go to cles and go to competitions, but I am supposed to practice everyday. I like to practice, but I get so frustrated when I have to practice by myself at home. Because I don't know what to do, and I've asked my teachers and they say different stuff to practice but it doesn't help. When I practice by myself I don't know if I'm doing it right, and doing it over and over doesn't help because I might be doing it wrong. It's hard to watch myself and concentrate on doing it. I get really really frustrated and I don't know if I should quit. I always want to quit and hate practicing at home, but at cles I love it and want to keep doing it. What should I do? Because this is just building more stress for me!!! Please help!