Do you patent your greeting card designs?

Yes, I think you should. That's if you don't want anyone stealing your ideas. THAT does happen.Be very careful.. I am an artist myself looking for the same info.

I was advised to seek a lawyer.

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.