Need some hints

Just had my third lucid last night, and unlike the others, this one lasted more then a few seconds. I would say it lasted about two minutes maybe so i was able to get some time to test my control. The problem was there was this annoying DC with a spear that kept trying to kill me, which believe it or not, makes it difficult to focus, and i knew that i could just make him go away, but for some reason i couldn't leave the scene i became lucid in. I couldn't kill him either, i tried summoning a more effective weapon, but that proved futile. So my power was limited to pretty much moving objects with my hands. I did successfully prolong my dream by spinning, which was nice to have that finally work for me. Does anyone have any hints to start gaining control?