Wild images

I succeeded in a wild attempt today, and it started off as i began to dream, i saw images. The first image was of friends i saw at the store, and that lasted a literal few seconds. Then the second dream was, it was me in my apartment and i was trying to walk but i was in sp in the dream. What causes people to be in sp, in their dreams? And does everybody experience sp when they wild? And one more thing, why is it that when you nap during the day, most of the time people's dreams only lasts for just a few seconds, or minutes? Oh yeah, while i was in my second dream which lasted longer, i did a technique from one of the tutorals or from some other thread that said to yell clarity, instead i was saying in my dream, "stabalize". I said this a couple of times, and the dream lasted as long as i continued to say it.

On my first WILD attempt (which in fact, succedded) I had sp in waking life, then I was flashed to a scence in which I was in the same postion as I was when I was on my bed (in waking life). I was floating in the dream (same postion in bed). And I couldn't move in the dream. I just floated there and I saw this girl on a bench. We were surronded by darkness. The only things I could see were the girl, the stone bench she was sitting on, a about 15 by 20 foot of grass, and the darkness surronding the grass. She looked like the scary girl from the video game called F.E.A.R. The lucid dream only last a few seconds though :(