AAH! JPEG! Definitely don't use that one in-game.
However, from what I can see, the robot thing still seems a bit ill-defined. Perhaps make a large-scale sketch to get an idea of what you're drawing, then scale that down and draw over/from that?
When I said the house's perspective was off... Well, it's still off now. It seems buried in the ground the way it is now, especially considering the side-view/platformer perspective. The back side of the house shouldn't dip down.
When I said the house's size was off, that wasn't what I meant either. Make the house bigger, but not the door. Now the robot just seems smaller. It could use another story, but I'm not sure how that would work.
Well, I'm working on an edit now. If I could only get my dang tablet to work...