Hello Supinebro,
Unfortunately, I will be
Rejecting your map.
The theme isn't original, as there are many biome related maps. Please read over 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 great, it is accurate to the biomes theme, but it is quite blocky and a bit messy in places.
The parkour doesn't have much variety, I would recommend experimenting with a larger variety of blocks and items when building jumps, it will make your map overall more enjoyable to complete.
The length and difficulty are good for an easy map.
Thanks for submitting your map! I hope to see more maps from you in the future.