You cannot set a different image as the mini picture of your hub. However, it will choose the first suitable image from your hub. If you want a different image for your hub, you have make a different image the first one in your hub.
HubPages simply looks through your hub and selects the first suitable one. If you want a different image as summary then you need to have a different first image in your hub.
No you cannot do this. Unfortunately though, but the answer is no (According to my limited knowledge).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.