Hey there, before going on I'd like to mention that I am just a Moderator and this has no effect on your final summary/decision for your map submission, keep that in mind!
First of all its great that your making an expert map I like how you mixed blocks together in your map to add more detail in your build but honestly from my perspective/POV you definitely could add some more detail to your map, possibly something that would make it stand out as at the moment it seems kind of dull and would need something to spruce it up, possibly some greenery or something hanging down from your large tower map, just my personal opinion.
You do have some nice jump variety and a lot of different types of jumps that made your map more interesting for me to try out/review, as caseyclosed mentioned above there were a couple of strange spikes and stuff that would most likely be found on different difficulty maps.
Originality ~ Sadly your theme is not original as there are already a few maps that look like this from my experience FountainPK.
Anyhow, I wish you the best of luck with your map submission, there's nothing else I can really say, good luck! :)