I think you're veiwing it as too difficult. In 90% of my lucid dreams I have god-like control, simply because I should. It's your dream, there is no reason why you can't do anything. If you still find it hard to do things, try to convince your mind that it is possible, eg. I can shoot fire, In fact, I remember getting geneiticly altered yesterday to be able to do that. However, it is much easier to just realize that you can do anything.