In the second to last photo in your first post (it's easier if you number them next time) you can tell the time it took for you to change exposure values was quite significant. Maybe auto-bracket it next time...
And the second post's photograph looks like it has soft focus. I'm guessing your tripod moved slightly.
Confucious already mentioned the halo effect in 3.
My favourite is 4, because of the nice foreground.