Hey Dodge123,
I'm sorry to have to tell you that your map has been REJECTED. The theme is technically original, as there are no "Stronghold" maps currently added, so well done! The build is not attractive, is very simplistic and lacking in detail, and it doesn't really resemble a stronghold per se (besides the use of stone). Basically, the build doesn't really convey the theme well. The PK length and difficulty definitely fit more of the hard difficulty rather than the expert difficulty. Also, the PK really needs to be spiced up. There are some varying jumps here and there but there are multiple segments of the same jump which lead to an unenjoyable experience. I really recommend using many different types of blocks and jumps to make the PK fun. I definitely see potential, can't wait to see more map submissions from you in the future!