Hey Airidassim,
I'm sorry to have to tell you that your map has been REJECTED. The theme is not very original as we have a large number of nether maps currently added and this is not a unique take on it. The build is unattractive, messy, entirely floating, and lacks a main focus (I don't see how this is a nether void). The PK length matches the medium difficulty but the difficulty does not at all. There were multiple difficult jumps in this map (Multiple double neos and 4 block jumps) that do not fit in the medium difficulty. Also, the PK was very repetitive because it had many consecutive segments of the same jumps (fence segment, neo segment, ice segment, etc.) Try to use as many different blocks and jumps as possible so that your parkour is varied and enjoyable. I see great potential, don't give up. I hope to see many more map submissions from you in the future!