I've had this sitting around for about a month and just now decided to post it. This being my first decent build, I don't expect it to earn any praise. However, I'd like some criticism (and possibly some better building techniques) to use in future builds.

^Entering the build

^Inside one of the houses, complete with lever to control moon roof

^Hmmm... this house is sort of empty

^Or is it?

^Into the labyrinth

^A key! I wonder what it unlocks?

^Finally out of the labyrinth

^What? Is this really part of the build?

^Overview of the build
The main reason I'm posting this is to get advice to improve my building, so ratings x/10 and building criticism/advice would be appreciated.