If you're using MCedit, you import the schematic, paste it in the world where you want it; make sure the grass level at the entrance drawbridge is even with the grass level in your world or it will be higher by several blocks, also be sure to include water and air when you paste it. Once you give it a few minutes to paste, use Ctrl-S to save your update and close the program and it should be in there.

Let me know if you are able to successfully access the MCedit file.  Like I said, I've never done this before so let me know how everything works out.

Also, let me know what you think of the map!  I recommend that you explore everything without flying enabled first, I have added many spaces and secrets.

Of course you may make any alterations you'd like.  One aspect I don't anticipate improving before I put the map up for download is the landscape.  I am not good at that part of building, unfortunately.