Build: Personally, I think the build could be better. The tombstone itself and the ground are passable, nothing too bad there. But, the shaping/placement of the skull and soul and the lack of proper parkour integration work to hinder your build's attractiveness by quite a lot. For me, the skull shouldn't be there. It feels out of place. And, I like the idea of the soul kind of popping out, but it wasn't very well-executed. It looks very odd. The parkour integration is a pretty obvious point: you just have a bunch of floating parkour all over your build. You need to address these things if you want to make your map be in acceptable conditions.
Parkour: The parkour was a little too short for the medium difficulty, although it was hard enough for it. I suggest you add a couple of jumps so that it makes it to that 40-60 jump range. But, there's a larger issue at hand: lack of variety. There were far too many identical ladder jumps for my taste, it got very boring. And, the ending portion, although the block itself changes, the jumps kinda just stay the same. We want you to incorporate a bunch of different jumps (and blocks if you want to), don't limit yourself to the same things.
I hope you take these criticisms into consideration when submitting maps in the future, good luck!