There is an included readme file. Here are the notes. Sorry, but no screenshots just yet. I've been working on Galaxy Wars a lot today, and I'd like to finish it before next week, so no time for taking screenshots...
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The Process
I created a new sbsp using 3d Studio Max and the Halo Editing Kit for PC.* I converted the map to demo using Queen Anne's Revenge and then ripped the sbsp and imported it into the original bloodgulch map using Eschaton 0.7.3. I then "dropped" everything to the ground using SwordEdit (Modded), imported the bloodgulch base CE tag and a small wall tag from Mota's Tag Pack (used in other Demo mods), and used the small wall tag to "patch up" some holes in the bloodgulch base scenery. Unfortunately, the bloodgulch base scenery is larger than the original bloodgulch's base, so I had to do lots of additional tweaking.
Known Bugs
1. The front of the bloodgulch base has collision problems. You can walk through the front and jump right to the flag. I thought that was cool, so I kept it. The only annoying issue here is that you can't drive in front of the doorways facing the middle of the map - there is an invisible wall.
Feel free to get rid of the bloodgulch base by nulling out the bloodgulch base scenery in the scenario tag (in the scnr tag in Eschaton, null out the bloodgulch base scen reference under Reference Swapper). This will remove those annoying invisible walls also.
Credits
*Special thanks to UnevenElefant5 for compiling the Galaxy Wars SBSP the way it should have been done. As of yet, I still haven't been able to successfully compile a brand new sbsp + scenario on my own

As always, thanks to everyone at MacGamingMods.com and its parter site HaloDemoMods.com. Thanks also to hce.halomaps.org and all the tag authors who use that site.
Tools Used
Halo CE & HEK (for the new sbsp)
Queen Anne's Revenge (for converting)
Eschaton 0.7.3
SwordEdit (Modded)
Enjoy!
[MT] Sparky
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EDIT: I guess I do have time for a screenshot

