Hello FrozenMelon,
I am sorry to tell you this map is being rejected. The theme of skyblock is technically original, but it is aesthetically similar to many floating island maps that already exist on ManaCube, so it is not original. The build is also not great, I know the theme is meant to resemble the gamemode but there aren't many queues that would tell the player is on a skyblock map, such as the traditional L shape of the skyblock island as a part of the build, for example. It feels a bit disjointed and spread out a lot with the jumps floating around. In the future, create a main structure or build with the parkour placed on, around, or inside of the map.
The parkour is somewhat varied, but not mixed very well. I would also say that some of the weird blocks used seem to be used just for the purpose of using a stranger block, like the barriers. To learn more about mixed and varied parkour, you can read our Mapmaking Wiki Guides. The map is also far too long to be an easy map, which average about 30 jumps. I would also recommend placing a checkpoint every 8-12 jumps or so. To see visual executions of our current standards, you can look at maps at /warp beta on the server, or the Accepted Maps subforum.
Thank you for submitting this map! If you have questions, feel free to message me here on the forums, in-game, or on Discord.