while i was projecting i went to the kitchen to see them but i didnt see anybody that was weird
That's normal when you project, one can see things that aren't there, and sometimes you don't see things that are suppose to be there.
I though there were no limit when u projecting like you decided when you want to wake up.
That is not necessarily the case, there are numerous reasons why one will automatically go back to the physical, enter a dream, etc.
so I was wondering if there were some tip/technique while u projecting to gain full control to stay in ap.
While out-of-body, I try to stay focused and calm, no matter what I'm experiencing at that very moment.