Need some help with our run door and roof.

Can anyone show me how to built a door for our run. Right now are plans are for a 7x8 run that will go next to our 4x7 coop. We really don't know what we are doing. Ugh! But can't find anywhere to buy a run that you can walk into. It will be 6' high. The other thing is I would like to cover it and would like a small pitched roof on it. Don't know how to do that either. Any information would be so appreciated. My husband will be helping me and we have used tools before. Just need the know how. I have been searching all day for information and haven't really seen what help I need. I've seen some great ideas and coops though. I had my first tiny chicken coop for a month and a half and it was to small and hard to clean. So this one will be so much better. Thanks for your help.