lucid

My first Lucid dream! (:
i remeber that i was in this type of school hall way, and i remeber rubbing my hands alot so i didnt wake up or lose it.
Dream:
i was in this school hallway and there were zombies everywhere, upstairs, walking on the sides of me, and down the hall walking towards me. i just walked stright looking around but i felt a little bit scared, but i knew i was dreaming. i tried thinking of somthing else but nothing else came to mind at that exact moment. I dont remeber the rest but i wish i knew how to change what i was dreaming of.