Here's my second attempt at creating a light drawing and I have to say I'm very pleased with how it's turned out, thanks for the instruction Stuart
I call it Toadstool and Fairy and it was shot in Archallagan Plantation in the Isle of Man today. I shot it on my Canon EOS 400D with the standard 55mm lens, my focal length was 28mm, it was exposed for 1024 second, f/29, ISO 100 on Manual, Bulb setting. I adjusted the curves in Photoshop as the original (below) was over-exposed as I was shooting in overcast daylight.
Here is my second photo with light painting and drawing, I think I need to get brighter lights, edit and practice more! Same camera settings as above, different exposure times: