Warming up the body before you start dancing is very important. Deanna McBreaty talks about the importance of warming up in this video!
McBreaty recommends starting with plies, then tendu, degage, fondu, rond de jambe, passe combinations, frappes, développés and grand battements. From there, it is best to have a stretching combination to further warm up the muscles.
For floor work, McBreaty begins with adagio, then tendu, traveling tendu combination, petite allegro, and then working on pirouettes.
Knowing how to learn from mistakes is very important. Doing something wrong is how we all learn to do something right!