For a game in progress, it's not bad. The score/life/level appeared blank to me, and I think you need to add an end game screen, and maybe a rolling cinematic for the ball. Keep working on it, though.
Not terrible, but you need to add more, the basics like a timer or score counter, and then maybe power ups or something to make this game different from the countless other snake games.
If you could stop the music it would be nice, you need to add something so people cant just hold left click and cheat, and I'm not too certain if you are allowed to put copyrighted music in your game.