Hello Isa,
Your course has been Rejected due to the following reasons:
-There is already an up themed course in the Donor courses shown here.
-Colorful course themes are used way too often. Try to get a theme no-one has used before! If there are any categories you can't see feel free to ask me to surf them for you to make sure the theme isn't there.
-The house didn't have a lot of detail. It was just barren floors.
-In the movie the house was lifted by a lot of separate balloons which would look like above. The way it was built on your plot it looked more like a giant hot air balloon.
-There is a skip in the map located here. The player can jump around the purple block and skip half of the map. (Easily fixable with barriers)
What I liked:
-The difficulty of the jumps was good for an easy course.
-Implementation of Iron bar parkour.
What can be improved:
-Theme (Choosing and Building)
-Detail
-Testing (to be sure all jumps are possible and there are no skips)
If you want to improve some of the problems listed above then re-submit your map feel free to do so.
~Preston