Hey there, before going ahead with your map submission review I'd like to inform you that I'm only giving you my personal opinion/feedback on your parkour map submission and my personal feedback will certainly not affect your parkour map submission in the slightest, I recommend that you take in my feedback to improve your submission if there are any flaws, you don't need to and you're free to ignore me but anyhow, before going ahead I'd like to mention that I'm a Moderator not a Map Judge so this is just my personal opinion and I am not accepting or denying your parkour map as this is only my personal opinion.
Parkour theme/detail: Unfortunately in my opinion you're parkour theme resembles floating island type parkour in my opinion, unfortunately, there's plenty of parkour maps that look quite like this sadly. For your detail it's pretty basic, there's some detail but personally, it isn't really much.
Parkour difficulty/variety: For your parkour difficulty I think it would more match an EASY parkour map difficulty, you've got a couple of irritating jumps but I don't believe that it would be considered MEDIUM difficulty, for your parkour variety it's very basic in my personal opinion. I suggest adding more interesting parkour jumps like flower pot jumps, chest/enchantment table jumps, etc.
Good luck!