Yeah, I've got to admit that the mirror is the best option. But i know from personal experience that in FA's you can find yourself locked in the bedroom, or wherever you are.

What works for me is, thinking as hard as i can about a location i wish to go, And then falling backwards with my eyes closed. When i open them- I'm usually lying flat on my back wherever i wanted to go.

The only problem with this is, if your new to Lucid Dreams. In this case, Thinking too hard about another location can either cause you to forget you are Lucid- Thus you do not fall backward, Or you wake up. Closing your eyes also causes this.

Whatever you go with, I hope it works for you!