Fairly Good.
It does have a fairly original concept. You do get some points docked because it was just a single black line. If you change the background color, had several lines that rotated through some neon-y colors while still doing the their little twists and whatnot, it would be better. Maybe for kicks toss in a few arrows like in DDR just so you can sit and imagine some crazy kid jumping out of his/her seat and starting to dance. Potential is definately here. This is kickass for a first flash, and much better than several "artists" 20th flashes. Especially since many people do simple little stickmen falling off a cliff or something and then excessive redness meaning blood splatters in a way only MSPaint can do. If you work on some artistic skills, like people, you can probably get on the front page.