Hello Shinx!
I am here to give you my personal review of the map
Firstly the THEME of your map. While there are some maps from Celeste already, I believe there isn't a single map like this. So I would say that the theme is original! Good!
Secondly the BUILD of your map. After looking at reference pictures for a while, I will say that I am both not a fan of the build and a fan of the build. I personally think that the map build is rather messy, and kind of difficult to see what you were trying to build with it. However I can also say that I find it accurate to the original game. The amount of effort that has went into the build is also very clear, so in the end I would say that the build is good for me!
Lastly the PARKOUR of your map. I thought it was very good! It fits the Medium difficulty quite well and is varied well. The parkour was well thought through, with fun jumps that fit the map's aesthetic and wasn't jump vomit. The length was great for a Medium map, the checkpoint placement was good, and the map is also decently fun to speedrun, which is a trait I like.
Overall a great map Shinx! Good job :)
Good luck! +1
(Mad respect as well, I couldn't find a single skip in your map that actually mattered ;D )