I honestly don't know how much more of these I'll do, but I guess that that's one of my last.
Oh my! Thats amazing! What did you use?
I only used a pen that has a light on top of it, with a shutter speed of 25 seconds. I used at least 5 seconds to light up each cup with the same light that did the streaks, and just crossed over between them, while pointing the light at the camera of course
Very nice ^^