Like they^ said, the theme is unoriginal as there are several floating island maps, as well as maps relating to nature. I love the detail with the vines on one of your islands, but overall, the build could be seen as plain. There are some floating jumps, which are a big of a negative. Also, your parkour could more variation. I think it may be too easy for an expert.
-1, but I wish you the best of luck! <3