You’re not asking for much, are you?
Since the Barrow-Downs already exists as a compendium of what people think of various Middle-earth topics, I would hope that any Downs member ambitious enough to write a minimum of three properly spaced and referenced pages would feel they already have a place to share their thoughts with the world – The Barrow-Downs.
Of course, everyone is free to participate in whatever endeavors they please, and I wish you luck, but I don’t see what would motivate anyone to write a lengthy essay for you under such strict guidelines. After all, we study Middle-earth every day here in the barrow, and there are already thousands of pages of material available for your study.
We had an
essay contest on the Downs once, but we had prizes! Your request seems too much like homework to me.