Eh.
There were a couple of things wrong with the game.
First off, the setup of the arrows...now see, if this was a true ddr game, the left arrow would be on the left, the up and down arrows in the middle (forgot which went first, haven't played in awhile) and the right arrow on the right. The way you set it up was a bit confusing. Also, the steps seemed sorta redundant and glitchy..
But, since this is your first flash game, it's not bad. Just try to do better, and this game will rock :)