Excellent in many ways
This is certainly not a bad flash game, but it's not quite "good" yet.
First off, I'd suggest either adding more lives or implementing a continue function. The levels are mildly challenging and it gets annoying to have to start all over after only having two lives.
Second, the game is not incredibly original, though I haven't beaten it yet (I did try a few times and I suppose I'll try until I do beat it). I think you could come up with some interesting addition to this game that would make this game a lot more interesting.
Overall, though, I think it's a good game. I would work a bit longer on graphics for the next one, though, and I would also, as I said before, implement something awesome gameplay-wise that would make this more than just a simple platformer.