Well, just a week ago I noticed that I could change the speed of my camera shutter, so I decided to try writing with light, after some tries I got this pictures! I really think this looks awesome, and it is pretty simple as well. You just need to adjust your camera's shutter speed into a low one and then while the shutter is making its voice start moving your lamp to create that neon styled lines! It is big fun! Remember to do it on a dark room (It could be a little scary if you are as clumsy as me, I fell down twice because I couldn't see nothing!) Have fun!! Love, Monica.
PS. you can see an awesome video about this kind of pictures here. *it appears at the last part of the video*