I love the build, the 3D design of the "crayons" like we call these in french, is so cool. All details of a box of "crayons" are in (according to minecraft details and size) and the construction isn't too big so the player cannot imagine like "oh wow too long, imma do it later".
You have, when you build a parkour, to imagine the thought of the player to not make him abandon just because of the size, so maybe that's why you built it this big, but not huge -> +1 (just as an opinion, even for the beauty of the build, why didn't you make some jumps on the front title of the box ? That's why I didn't remove -0.5)
Therefor, by the screens you did, we cannot see clearly what jumps are there. We can barely see fences, slime blocks jumps and some jumps under the box.. As lambda judges, we cannot tell just by looking, if you only consider jumps that are in, which difficulty it is, sadly -> -0.5
--> +0.5. I think it'll be approved cause you all know how to make a map without getting denied, so I don't need to say few next words. ^^
