I just had my first LD! The funny thing is that I really don't know how I happened, I went to bed performing MILD but I don't recall RCing in my dream. And I became lucid a bit into the dream so I don't think it was my mantra. But anyway, it was awesome!
Here's my DJ entry:

I was at some sort of outdoor courtyard, at a college. Some guy handed me a piece of chalk and told me to trace the ground around various pieces of furniture. I did so, and then realized I was dreaming. The first thing I did was to stay calm and rub my hands together. I did some various stuff that I can't remember, and then my Mother was there and we were both looking up at the sky. The clouds were circling and starting to form a tornado, and my Mother started to panic. I told her not to worry because this was MY dream and I could change whatever happened, so I closed my eyes and tried to change the weather to a nice sunny afternoon. When I opened them the sky flashed a bit and then did not change. Then I woke up.