Hi JudahOMG, I just tested out your map and while I really like the build, I have noticed some things that you should keep in mind when you make your next map.
1. There is a lack of variety within the parkour. It's very repetitive as it's mainly just regular blocks. Try and add some variety by incorporating ladders, fences, and other various blocks.
2. It is REALLY short for its intended difficulty, and the jumps aren't that difficult. Try and add more jumps corresponding to the maps difficulty.
3. I'm assuming the theme is a sea temple, just by looking at the block choice. The only issue with this is that it's been done before. So it's not very unique.
4. This one isn't as important, but for future reference please put the pressure plate over a piece of colored wool corresponding to the difficulty of the map.
Anyways I hope these tips help you with your future map building, and best of luck!