Pre-practice will always provide an additional benefit and you will feel more confident from such a practice and practice. Especially if you are the only new and sole consulting sales training after a call, you can understand that the script is not flexible and not very hard. You need to practice a lot, always give your call to the customer. This way you can save a lot of time
The sales style of advice is very good, but you can leave the basic principles of selling old-school. Many consultants selling seminars and sales books presented today with much customer engagement training course in the companies are very good, but many old schools leaves an important point of sale.