Hello setblder,
Unfortunately, I will be Rejecting your map.
The theme is original, there are a few maps already related to shapes, but none exactly like this.
The build isn't great, it is quite 2 dimensional and plain. I would suggest trying to add a bit more shape and depth to it where possible, as well as making it more detailed, as having just one coloured wool does look quite boring.
The parkour is varied, however you did group jumps quite a lot. What I mean by this, is that you would have a sequence of just ladders, then just fences etc. Try to mix up your jumps throughout the map more, as well as experimenting with a larger variety of blocks and items, to create original and enjoyable jumps.
The parkour does look a bit floaty, try to have one or two main builds then implement the parkour into that, rather than having the parkour going across many smaller builds, as this can make your map look quite messy.
The length and difficulty suit an easy/medium map.
Thanks for submitting your map! I hope to see more maps from you in the future.