Hi, My IGN is BananaTheBob and I'll be reviewing your plot today! :D
I like the theme, but you are missing required elements!

Structure:
Your structure needs depth. To incorporate depth, create multiple layers and detail then with stairs, slabs, fence etc. Try to focus on the walls because that takes up the majority of the plot.

Terrain:
Terrain is required to rank up. When you build it, have it evenly spread out throughout the entire plot. Additionally, try to make it look as natural as possible. To do this, smooth it to get rid of all the edges.

Trees/Organics:
Custom trees are required to rank up (Bonemealed trees will not rank up). When you build it, make it proportional. This means that the trunk can't be to big for the leaves and the leaves can't be to big for the trunk.

Side Notes:
Your plot has been auto-denied due the use of world edit for the cobwebs. Additionally, they're (cobwebs) just confusing.

Good luck!