This seems like a neat little mini-golf game--but I'm finding that the power-bar fills up far too slowly, at least on my machine. It seems to take a full twenty-five or so seconds to reach full power!
Now, I daresay that there are those who would be glad of the ease that this provides. So what I suggest is that the speed of the power-bar be made configurable: that you provide a setting that allows the player to adjust that speed to their liking.
Otherwise, the art is nicely done, and the music is pleasant. Further, the ball seems to move and respond well. ^_^