Hello Sahunn,
I regret to inform you that your map is being rejected.
The theme is unoriginal in the sense that we have several maps relating to Minecraft mobs; however, there are none specifically relating to Herobrine, so good job on that!
The build is accurate to what you were going for; however, it is plain in the sense that this is quite easy to make.
The parkour is a bit repetitive with the use of fences and wood throughout (and obviously ladders) so please just try to incorporate different types of jumps throughout your entire map! The length of the course and difficulty of the jumps both fit the easy difficulty quite nicely, so good job on that!
Thank you for submitting your map, I would love to see more submissions from you!
Have a nice day,
Kristina