What makes a cock great?

What, in your opinion, makes a guy's cock look attractive?

Is it all about size? Girth? Cut or uncut? Head shape? Something else?

Since people have seen my cock online, I'm been flattered but a little startled by people who said that my cock is "pretty." I just never thought of a cock being more attractive looking than others. So ... I'd be interested to hear what you think makes one cock more good-looking than another!