I like how the sprout does not only grow when you press space, but flickers. This reminds me of older nintendo games like mario and is a really nice shorthand for those familiar with games to know that you are "powering up". I wish there was a more cohesive art style with this game, I recognize that you are using the pixel background from the stardew valley start up screen: I wish you would have made the sprout pixel art aswell, and maybe had the timer be in a pixel font. Or, if you wanted to use the hand drawn style for the sprout, either have a solid background or simply trace the mountains with a pen tool in photoshop for a quick background.