While your personality touched on things that Eames does and likes there is nothing solid behind it explaining why. Why does he gamble? Why does he enjoy the challenges? Are there aspects of his life that made him seek this type of lifestyle? How does he feel about risks and failure since that is the other side of gambling and challenges. What support do you have other than constant teasing that shows he easily gets along with Arthur? These are just some examples of the kind of depth we would like to see.

The motivations are why he does what he does, and his attitudes are why he feels the way he feels.