Hello xSpacebar,
Unfortunately, I will be
Rejecting your map.
The theme isn't original, as there are many maps related to minecraft/floating islands/biomes. I would recommend checking the document linked in this thread -
https://manacube.com/threads/parkour-list-with-theme.20194/ to make sure your map idea is original.
The build isn't bad, it is accurate to the theme but it is quite small. In the future, try to make the main build a bit bigger, so you can then incorporate the jumps into it, rather than having most of the jumps floating over the void, as this can take away from the build.
The parkour is quite repetitive, you did have a few different jump styles which is good, but you did group them a lot. What I mean by this, is you would have a sequence of just normal jumps, then just soul sand jumps etc. Try to mix up your jumps a bit more throughout the map, as well as experimenting with the way you utilize different blocks and items, as this will make your map more fun to complete.
The length is good for a medium map and the difficulty is good for an easy map.
Thanks for submitting your map! I hope to see more maps from you in the future.