We're talking physical attraction right, because we haven't talked to him yet?
Looks are obviously a plus. Most girls like tall guys with a bit of muscle on them and a nice-looking face. Other than that it's really important that a guy takes good care of himself. His clothes have to be clean, ironed and matched, his beard has to be shaven or trimmed, and his hair has to be cut. Penetrating body odours as well as too much aftershave are turn offs.