Butterfly effect

This photo I shot last night after midnight before I went to sleep. In the photo is a deco sticker from my bedroom wall, but the long exposure time that I've used creates an optical illusion of the movement. So in the foto it looks like if the butterfly was flying.

The screen is shot without flash in a dark room, where the only light was coming from my bedside lamp - lamp is round and open from the top, so the light was coming to the target from below.

Amilie