Heyo! Imma keep this one short since there's not much for me to comment on that hasn't been said, but here are my thoughts!
THEME:
The theme isn't unique, as we have tons of plant and garden-themed maps.
BUILD:
The build feels very basic and is dominated by pixel art of flowers. The rose at the end is nice, I'll give you that, but the rest is boring and quite basic. It also has no real main build.
PARKOUR:
The parkour is easy, repetitive, boring and is entirely floating. To me, I think the whole of the parkour needs a reworking.
I hate to say it, but I think you're just gonna have to go back to the drawing board. Unless you can completely change this map, you might need to just start over. Maybe try doing a specific garden (e.g The Secret Garden?) for the theme, get a main build and better parkour to fix this map, but sadly, I think you just have to scrap the idea. Nonetheless, I wish you good luck with your future submissions!