Hello Spiriten,
I regret to inform you that your map is being rejected.
The theme is unoriginal, as we already have several maps based around floating islands (Seasons, FloatingBiomes, HilltopTown.)
The build is well-done for a floating island, and it has a good amount of detail, so good job on that! The blocks on the top of the island look a bit messy, but it is still well-built.
The parkour does have a decent amount of variety, so good job on that! The length is good for the hard difficulty; however, the parkour felt a bit too easy. Try increasing the difficulty of some of the jumps! The parkour is also floating quite a bit (meaning it isn't attached to the build) which can make it look messy.
Thank you for submitting your map, I would love to see more submissions from you!
Have a nice day,
Kristina