Well, who knew...the smallest P.O. is in FLORIDA? My Grandpa & brother both work(ed) for the Postal service & one of my good friends was postmaster @ a small P.O. in Accoville, WV ~ she just retired in March :) Very nice shot w/an interesting bit of info too...THANKS FOR SHARING!!!
Most interesting and informative - these two qualities balance in a good manner the composition minor defects.
I personally like this image a lot. A piece of reality is very precious, if not most precious of all to me.
My thoughts are that the sky overpowers the post office due to it's brightness. Cropping off half of the sky will let you brighten the Post Office a bit and give it more prominence. The sign and the building are the story.