Well-groomed, fitting clothes and masculinity - sounds easy in my opinion. I remember a model tells me that photo shoots are all about how the female can alter postures. A male model does well by simply standing straight, and must have a lady-appreciating body (I don't really know what that means, I guess it depends on the lady).
In my experiences, a chin-strap of certain size and certain shape is a kill! Proportional to facial features, body size, style of clothing, and attitude. -> a bit abstract I think, of course, every lady has her request and gentleman's duty is to match up with it.
In addition, being pale is a buzz 99% of the case, so burn up ;-)