Just wondering, have you considered looking at my maps to see how I make them? With the Void world, and a 'Slick' look to it.

Hey, I played your map, it was enjoyable. A few things i notices (Constructive Critisissim [How evr u spell it XD])
-It's on a Superflat. What you can do to avoid that / make void maps is Go to Make World>More World Options>WorldType (Superflat)>Customize>Presets> At the top of your screen it will be tons of random numbers, click on that bar, remove everything from it and put in there " 0;0 " (Make sure the defalt is GMC) then use the command ((  /setblock ~ ~ ~ 1 )) it will make a stoneblock that you can build from on the void world.

-I saw water leak behind the throne (Ice?)
-Also I saw that in the begening there was a random opening leading to nowhere
-In the (I belive they are) sewers (back way of the underground maze) there is missing glass twards the middle if you look up.
-The ladder dropdown to the diamond underground maze lobby thing is blocked off with glass


EXTRA:
I am not sure if you are aware of the /gamerule command, but on my maps I have preasure plates that send a signal to a row of command blocks using commands such as
/gamerule doDaylightCycle false
/gamerule doMobSpawning false
and while i was playing it started raining so I also use a command that clears the waether for 1m seconds so the player won't experience rain. ( /weather clear 1000000 )

Other then those minor things, it was a really fun map. I hope you check out my maps and see what I mean? I hope you read this.. haha

If you guys like this style of a map then let me know ;) I'm going to be making more maps, just want to get some feedback on map styles you guys like!