so if i had a lucid dream could i like be like spiderman or be a jedi? 
Depends on lucidity-level but, yes, it’s possible.
Being a Jedi is very easy, but you may need more experience before you try out spiderman. You’ll probably wake up from sheer excitement if you try it too early.
Go easy, step by step. First explore your dream world to get used to the feeling. Then talk to dream characters. Interact with the dream world. Try flying. Change the scenery. And so on. Don’t rush, don’t get too excited. You will do all the stuff you want to do. But not immediately. In time. Patience is the virtue of the strong (or something like that mrgreen: ).
Try making all of NY naked 
or making GTA3 (Grand Theft Auto 3)become reality. Somthing about swiping cars in a dream is just so fun and refreshing.
I’m sure Yoda would disagree with you on that.
Spidey is easy to do you just have to master the grappling hook.
Sometimes i have amazing powers in LD’s although they might not be very lucid at all, so don’t worry if you haven’t got near full lucidity yet.
I flew in my second Ld
Tried to fly in my 3rd but wasn’t very successful, but i was able to transport myself
In my 4th i made things morph, i teleported things, i made tens of cars drive down the street-they were VERY weird.