Proper Body Alignment

What is something you have to have in ballet in order to be amazing? You guessed it proper body alignment. Without it one the dancer could get injured and two the performance does not look so hot. I believe this is the most difficult concepts of ballet, like there is no way to achieve perfect body alignment. Throughout every combination one has to be thinking about their head, arm placement, being lifted up, rotation, feet, and more. In class I really try to think about at least two of these thing at a time. I mostly worry about my rotation and being lifted up because I know this is what I need to work on the most. Each time I think I got the combo down with pretty good alignment I always seem wrong. There is always something to improve on in alignment. While watching other dancers I can see how they aren't rotating from the top of their leg or holding their arms in the proper placement. I feel like seeing other people's mistakes helps me with correcting mine. I feel like it is even more difficult to work on since we do not have any mirrors to watch ourselves.