Great game, loved the art, music and the secret ending.
My only advice is that it would be nice to have some sort of slider or number or something that shows the progress in the game. I played 4 runs, and lost them all and i thought of rating and moving to another game (because there are a lot of games to try) but I gave it one more try and I found last round I lost like 1 or 2 minigames before the end . If I had known that i would have played again without doubt. But I almost stop, so i wouldnt found the ending and then played again for the secret ending.
Also, in the paint one sometimes you click the pencil but still lose one life.