They are few free ones on the official site itself and some you need to buy. Here are some free sites were you can get Photoshop brushes for free adobe.com/cfusion/exchange/index.cfm?fro... (official site) unofficial sites: brusheezy.com/ photoshop-free-brushes.com/ photoshopessentials.com/photoshop-brushes.
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.