Hello Mr_Markov,
I regret to inform you that your map is being rejected.
The theme is original, as we don't have any maps with this concept, so good job on that!
The build is a bit plain, as it is mostly consisted of plain wool, so try to add some more details and some more variety to your build to make it more attractive!
The parkour is quite repetitive throughout each section with soul sand, slimes, and ice, so try to incorporate different jump styles throughout your entire map! This may include; vines, water, lava, heads, cake, and many more different types of jumps depending on your theme! It was also a bit confusing on where to go at certain points, so try to have plenty of indicators throughout (signs/heads) so players know where to go! The length of the course and difficulty of the jumps are good for the medium difficulty!
Thank you for submitting your map, I would love to see more submissions from you!
Have a nice day,
Kristina