Hello cool7803,
Unfortunately, I will be Rejecting your map.
The theme isn't original, as there are a lot of minecraft/biome themed maps already.
There isn't really a main build to the map, except for the small island at the beginning. Try to have one or two bigger main builds that are relevant to your theme, then incorporate the parkour into that, as having an excessive number of jumps floating over the void can make the map look a bit messy.
The parkour is very repetitive, as you manly used normal blocks and ladders. Try to experiment with a larger variety of blocks and items when building parkour, as well as the way you utilize these, as this will make your map more fun 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.