Nice work for first time, flapping in a storm night time SLR shots Jim. The two blurred shots look like a bit of shake as well as not quite in focus, how were they taken? (tripod, remote release, f stop, ISO, which lens etc?) The infinity focus and back off a smidge is variable depending on the lens, sometimes takes a bit of experimenting - it's worth doing some test shots in daylight when it's a bit calmer so see how much of a smidge you need.
Ian