Right now, that’s just a bunch of grey barriers! This totally definitely isn’t just me always obsessing over decoration, but using rocks and vines and such always makes the climb more appealing.
HOWEVER, only start focusing on these things once you’ve finished the actual layout of the parkour. I make the mistake of starting with the decor instead of actual gameplay far too often.
For the cliffside, you can put occasional wooden posts attached to the stone (kind of like mineshafts in Minecraft if you play it), add small stones & pebbles, or plants sticking out of the cliff face.
For the cave, put some secrets – dialogue, lore, or even some kind of reward for exploring, such as a checkpoint or a minor buff. Even better, add the entrance to another secret area with a short, optional parkour course that you can complete for a reward. Also, it’s a cave! You shouldn’t be able to see the sky from the inside of a cave. Put a stone background behind the barriers.
Maybe add rocks or flowers if you can add some emojis of animals or a sentry or maybe a obby and at the end you can get a need for speed button or a gadget to troll players by knocking them out.
Cliff should include some headhitters and wedge jumps, the secret cave should maybe contain something like a key or a star (Dadish reference!) that unlocks a secret at the summit. For more ideas on the Cliff, I know of a game that has a Cliff, but idk if it’s forum-ly legal for me to say the name
Hmmmmm…I know! More gray barriers!
…That doesn’t help, does it.
In the cave, put an easter egg of some sort. Maybe your gim, with your username above it’s head? You could make it so you can talk to it.
For the cliff, it looks good. You could place tilted wooden poles stuck in the mountain that you must neo up.