You have a very good article here but need to provide links to back up some of the things you're saying and to provide further information to the reader so they can go beyond your article if they so choose. For instance, heat lamps are far from the only way to warm a coop. You could list more of those, or put a link to a thread here or elsewhere on the different ways to heat a coop. Imagine if you're just getting chickens for the first time and reading this.
There are several areas that are great info but need pictures or links to improve them.
Also, that one picture you do have is from the web. Either use some of your own or ask members and most of us will willingly let you use our pictures.