bloody hell, the setting you have is so good its unreal.
number one could either use a crop or raise the exposure a bit. The Sun is far too bright and it distracts from the Hare saying that i just viewed it large and it really works. Maybe its just the smaller version.
Number 2 is really ncie however theres something not quite right about it. i cant think what though. not much use eh!
Number 3, crop! the bottom smoke is far too gray, just dull. crop towards thetop of that smoke and the picture would look awesome.