If you are demonstrating to the mirror to learn dance, then and the other side of the left and right is the opposite, that is, the other side of the left hand to move their own right hand, if it is really not good to distinguish, there is a simple way is to move with the other side of the same side, you can first distinguish themselves in the mirror, to understand the clear and then learn.
In fact, the left and right are not divided into what is not a big impact, dancing should have been more than one direction to take into account, a movement is not a fixed set, as long as the movement is coordinated to look good. If you are keying your own video, you can slow down the playback and then learn one movement at a time, then memorize the whole dance, and finally connect it, with music to help you learn faster, and pay attention to the overall effect.