Hiya, and welcome to BYC!
As a reviewer of hundreds of coops, here are some tips for you when writing yours. You want others to look at yours and think, "I love it, and I can build this!" You can also read a few others and see their comments.
*If you have a hand-drawn "blueprint," include it even if it's rudimentary.
* A materials list is very helpful! Let us know what you used for the base, structure, windows, ventilation, roof, etc.
* Give measurements of the coop, nest boxes, doors, windows, etc., as much as possible.
* Upload lots of pictures within your article, and space those out to show and
explain what you've done. By the time we're done reading, make sure we have seen all sides and the inside.
* You can include links to other coops you maybe got ideas from, places you purchased products from, etc.
* When you get chickens using it, you can edit your article later to put photos of them in there as it's a nice touch!
Check here to see if you can post yet. If you can, give it a title, then scroll to the bottom and save it as
Draft until you're ready to publish it:
To get back there again, one way is to click the arrow on the Articles tab:
When you're all done and it's published, be sure to enter it in the Official BYC Coop Contest #15 here:
https://www.backyardchickens.com/threads/official-byc-coop-page-contest-15.1637367/
Good luck, and yell if you need help!