Petal Pushers [Game] - feedback desired

[dsnettleton]

I've just released my first Android game on Google Play, and I'd like some feedback on it. The game is called Petal Pushers and it's a sliding match-three puzzle game with a relaxing ambiance.
[YT]http://www.youtube.com/watch?v=k7rxA-ebvgI[/YT]
Petal Pushers
Petal Pushers Time Attack
The top link is the full version ($0.99) and the bottom link is the free version, which has time attack mode only. No ads.
As I said, this is my first game, and I'd really like to know what worked and didn't work. I did the graphics myself, so artistic critiques would also be helpful.

Thanks,
--D. Scott Nettleton