For most people this is one of the hardest parts. Some words of advice, have a very light touch it is very easy to overwork a hand and if it starts getting to soft, walk away. [TO VIEW: SCAN DOWN 18 PAGES.
Self promotion idea. Printout a graphic image of your fav clients and sent it to them. Everyone loves to see their own face - imagine this sitting on their desk reminding them everyday how clever you are!