Hey, Waffle here! I wanna give some feed back on your map.
Pros -
I think this has the potential to be a really good map.
I like how you included the mushroom biome, which a lot of biome parkours have not.
Cons -
The islands, or "biomes" are just flat platforms, with a bit of stuff on them. Maybe add more detail to the islands, and the surrounding area.
Following the previous comment, maybe have the island come into a peak, instead of them just have a flat bottom.
Maybe add a bit more to the jumps them selves, and incorporate the islands/biomes more, as your only on them for like 2 seconds. Maybe have the players have to do a certain parkour on each one.
Best of luck! -Wafflethecat