Volunteer it up front. DO show me that you keep up with my business, my industry and that you're a Big Picture guy. DO have a sense of humor and fun. Even clients gravitate to attorneys who are fun to work with. Don't agree to my service guidelines unless you really mean it.
Talk is cheap - actions are dear.
Don't make me your quality control unit to catch billing and reporting snafus which are clearly set forth in our guidelines. Don't be defensive if there is a screw-up. Take accountability and tell me how you will set things right. DON'T ask me to pay full price if I'm not getting full service. If I don't get full service, offer to discount the price.