Sorry to tell you that your map have been rejected.
The theme is not really original, since there is already some "Mushroom" themed maps, be careful next time ! The build could be better, it's pretty simple, but I think more details on the mushroom would be good. The parkour could be better, it's a bit repetitive in my opinion, and the last part is a bit confusing because of the invisible blocks, try to add some sign to indicate where invisible blocks are, after the parkour is a bit varied.
Thanks for submitting your map, would be really good to see more maps from you !