Hello Wackymoder,
Unfortunately, I will be
Rejecting your map.
The theme of floating islands is very overdone. Please refer to the document in this thread -
https://manacube.com/threads/parkour-list-with-theme.20194/ to make sure your map idea is original.
The build isn't great, it's very small, and doesn't really have much detail to it. In the future, try to have one or two main bigger builds, then incorporate the parkour into that.
The parkour has a bit of variety, but is still very repetitive. Try to mix up your jumps throughout the map more rather than grouping them, and try to experiment with a larger variety of blocks and items, as a lot of your jumps were either normal blocks, slimes, or fences. Having more original and varied jumps will make your map more enjoyable to complete.
Almost all of the parkour is floating. It's inevitable as the build is small, but try to avoid having an excessive number of jumps floating over the void, and incorporate it into the build more, as having a lot of floating jumps can make your map look a bit messy.
Most of the map's difficulty is good for an easy map, with a couple of medium/hard level jumps, and the length is good for a medium/hard map.
Thanks for submitting your map! I hope to see more maps from you in the future.