Congrats on finishing your first game! Some suggestions that could have made a difference graphically: try to match pixel size for the assets, if you need a bigger flower you have to draw it again with more detail, or go the other way and reduce the pixel count of the other assets making them less detailed. Secondly, I think a background would have really set the game up thematically, just some clouds thrown there.
The gameplay was relaxing but there isn't much to do for the user, game plays itself.
Good luck and hope to see more games!