I like the idea, I almost wish I could see the robots path traced out on screen as I make changes. Starting off in the early levels was a little unclear before receiving control statements. The second level felt like I was just placing statements down in any order or combination until the thing I wanted to happen did. Things were much clearer starting at level 3. I had issues with one level where the robot would bounce down a slope and not go the way I intended.
I admire the effort that went into the art; I was sure they were hand-drawn until I saw your page. Keep it up!