Hello 2814,
I regret to inform you that your map is being rejected.
The theme is original, as we don't have any maps specifically relating to people riding a minecart, so good job on that!
The build is the main concern; it appears a bit plain (particularly on the person.) Although it is accurate to how it would look when one rides a minecart, I recommend adding more details to make it look more appealing.
The parkour is decently varied, and it fits the difficulty, so good job on that! It did feel maybe a bit too easy (yes, that's a thing!) I recommend adding some more jumps OR buffing the current jumps just a tiny bit!
Thank you for submitting your map, I would love to see more submissions from you!
Have a nice day,
Kristina