Its not bad man: I don't see why you're lagging...
..behind any sprite movies. Though I do see why you might be lagging. You're ok with drawing and whatnot: but I think what kills the average attention span of users here is the fact you don't have any music in the background. It could of perhaps used to be a little more dynamic, but that's no excuse to down-vote it below sharply tweened sprites and bright flashes.