You got me playing multiple times to try to improve my ranking, so the leader-board was a great addition for replay encouragement.
Got a little confused because I think I thought the brush thumbnail was a thumbnail of the image initially. :D
Also, it turns out I totally squandered my first brush which was nearly entirely square! :o Stopped painting early 'cos I didn't know what percentage coverage was good until after I saw the leader board. :D
Fun little entry, thanks!