Hello oskarkohummelko,
Unfortunately, I will be
Rejecting your map.
The theme isn't very original, as there are a few redstone related maps, as well as many minecraft item related maps. There aren't any exactly like this though. Please refer to the document 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, as it's mainly just small islands. Try to have one or two main builds that are relevant to your theme, then incorporate the jumps into that, rather than having majority of your parkour around the void with a few smaller builds around it.
The parkour has some variation which is good, however you did group them quite a bit. What I mean by this, is that you would have a sequence of just fence jumps, then normal block jumps, etc. Try to mix up your jumps more throughout the build, as well as experimenting with a larger variety of blocks and items when building jumps, as this will make your map more enjoyable to complete.
Like I previously mentioned, a lot of the jumps are floating. Try to avoid having an excessive number of jumps floating around the build and void as this can make your map look a bit messy.
The length and difficulty are good for a medium map.
Thanks for submitting your map! I hope to see more maps from you in the future.