@Chilled_Chaos That stone slab and stained glass design is awesome but for the love of god, please, people don't make spiral staircases going out one block. It's your choice whether you want to keep it or not but...
I'm not a spiral staircase professional, in fact, this is the first spiral staircase I ever made, making spiral staircases is easy. The whole staircase doesn't have to be symmetrical and still looks really good without it unless you have like extreme ocd you don't even notice the difference. I literally just tried placing down some slabs doing it in a circle as best I could just going up and I didn't go back to correct it. Sometimes your head bumps into some slabs while going up the spiral staircase after it's done. It's pretty easy to fix that.
That looks awesome, like it grew from the tree that way :D