-1.
The build is a bit repetitive, as the islands all look very similar.
The parkour is a bit short, although the difficulty is good.
The main issue is the theme of floating islands; there's already 18 floating island maps, and as this one doesn't add anything special, it's not likely to be accepted.
Regardless, good luck! I can see you have some building skill, just make sure to check in the Parkour List (linked in my signature below) that your theme/build is original!