As Acid said floating parkour isn’t accepted anymore unfortunately. But i would suggest making the koala bigger, maybe make a tree that it could sit in or something and make the parkour on that! :-)
Build: Personally, I barely see anything resembling a build on your map. The only thing present besides parkour is a miniature koala head. That is not enough. We want you to build a full, central, and accurate build that really conveys your theme. Then you can integrate your parkour into it, not just have it floating around. And, this goes without saying, it's also unoriginal.
Parkour: The parkour was easy and long enough for the easy difficulty. But, that was the only thing it did well. It was very repetitive and stale, proving to make it an overall unenjoyable experience. Try to incorporate a wider variety of jumps, don't stick to using ladders back to back or the like. Be creative!
I hope you take these criticisms into consideration when submitting maps in the future, good luck!