Very, very cute. Almost too cute, especially the death sprite (which is a horrible thing to say).
Music is fitting even if it's a bit simple, levels work exactly as they should. There's a bit of a slide after you land, but it's manageable.
My only critique would be - it's a bit too repetitive in terms of gameplay. There's almost no puzzle, just jump over enemies and traverse the levels. Which is fine, but I think it may get boring.
But I like it. It's a cute little game.