Design a Banner

I Want to Graphic [login to view URL], no, I do believe in it, I just don't understand it. This isn't an attack on designers. There is a whole language based around this and it is a hard one to crack. I guess people learn little bits here and there and from theory on uni courses. The books I read are a + b = c. There is no human element such as what design gives people. I can understand that something looks good as opposed to something but putting it into words - properly - is really very tough. It is probably second nature to designers but to me it's hard to 'describe' things this way. And I want to!