How to dance less sloppy?

recently i learned some fast choreography and my teacher has told me that even though i have a lot of energy i need to dance a little bit more controlled and/or clean. and when i saw myself when i recorded myself i have to agree. it is very sloppy looking. does anyone have any tips to make me cleaner? i know that i have to practice a lot but just so you know i have the class once a week, and i don't have a mirror to practice in front of.