Waiting For The Night

Can I try to get lucid during a nap because I am not into getting one shot at this everyday? If so what technique are you supposed to use? also on a side question how are you supposed to close your nose for a fild without using your hands?

Yes you can lucid dream during naps. Go ahead and try it!
You can use wichever technique you are comfortable with.
On the side question. You are supposed to use your hands. The idea is that you fall alseep sometime inbetween the RCs wich is why you have to be very close to sleep.