CP and humiliation are two different services. Verbal humiliation needs no equipment, just a healthy imagination. CP requires rather more equipment, a crop, cane and paddle being your main tools, I also have nipple clamps, candles, and a blindfold.
The clients who I see for verbal humiliation very rarely culminate in sex, its always hand relief. I don't charge extra for humiliation or CP as I have one fixed price which is for my time, and I enjoy the relatively mild stuff, it makes a pleasant change. Get looking online for ideas and inspiration..I think one site was called kinky kicks.
If you are feeling a bit unsure, start the session by asking the client to take you through, step by step, his fantasy. You will find that quite often they turn up with a script anyway, which is brilliant as you can then refer to it while they are blindfolded or whatever. Start in whichever way suits you, but be careful. There have been a few notable accidents in the media recently.