Hoi SecretlyaUnicorn,
Sorry to tell you that your map have been rejected.
The theme is not original, since there is already a couple of "Rainbow" themed maps, please try to found a batter theme next time ! The build is not good, it's pretty unattractive, because most of your map is floating blocks, and the build is a pixel art, please try to avoid making pixel arts map, and build your parkour on/in a main build. The parkour is not really good, even if you tried to vary a bit the parkour, with fence and a head jump, it's still repetitive ; there is a lot of normal jumps, and the first ladder part is the same jump 4 times.
Thanks for submitting your map, would be really good to see more maps from you !