First Big Spawn Project

I'm not very good at building, nor do I spend a lot of time building anything, but ever since I've started up my server again, and players have been growing, I figured I should build a new spawn for my server, which led to this.
Note, this is my first taking my time to build a spawn, It took me about 7+ hours with a lot of kool-aid and crackers to build this spawn, which made me very happy with the end product.
Heres some images of it if you want to check it out
http://imgur.com/mnXV8yd,4T57kEr,5XHtCNw,28fntp5#0

1st image: Before Photo
2nd image After Photo
3rd image: Close-Up Portal Holder (Non-Active)
4th image: Jail Cell/ Internal Support/ Decor

I know, the inside of the spawn is empty, that's because I haven't really thought about what I should put inside of the spawn, so I left it empty until I can figure out something to put inside.