Great lightpainting image.
Yes the sand in the first one looks very cool, a little bit as fog.
I have written an article about lightpainting. Maybe you'll be interested in: Lightpainting and and basics of long exposure photography
Keep on doing this:)
Thanks, @jondie! I'll check it out! These were taken in 2010, and I haven't experimented with light-painting since then. Perhaps it's time to play with it again. Glad you like the photos!