sounds like you coach good hard fundamentals....i like that...tp for you...!
First thing I tell my kids at the first practice:
"You're here to learn and have fun. I don't know if we have the best talent to win a lot of games, but we are going to win games because you are going to work smarter and harder and longer than the other team. I'm about fundamentals and conditioning. You're going to be fundamentally a better player when you are done, you are going to be a better athlete when you are done and you are going to be in better physical condition when you are done.
And believe it or not, you're going to have fun doing it. Now go give me 20 sets of suicides and be done be quick about it or you're going to do 5 more."
Break em down, build em up, let them have fun.