Hi,
There is something that you should know right away about lucid dreaming :
Once you realise that you’re in a dream, you don’t become god almighty automatically.
Of course, it is possible to make confetti out of a giant but it may not work at first. You gotta do it right.
There are several ways to control your dream go on this LD4all article which will probably help you :Active and Passive Control guide
Ask specific question if you can’t find an answer in there. I’ll be glad to help you 
Carry on and good luck !