Hello lefusiller,
Unfortunately I will be
Rejecting your map.
The theme is not original as there are already cloud maps. Please check this thread
https://manacube.com/threads/parkour-list-with-theme.20194/ to see which themes have already been done, so you can make sure your map idea is original.
The build isn't very attractive, I would suggest trying to add more shape and detailing, since it looks quite plain and blocky.
The parkour doesn't have much variation, as it mainly consists of single blocks and ladders. Try experimenting with a wider variety of blocks and items when building jumps, it will make the map overall more enjoyable to complete.
The length is a bit too long for a medium map, and the difficulty suits an easy/medium map.
Thanks for submitting your map! I hope to see more maps from you in the future.