Confirm your experience and abilities. Validate your knowledge. Provide case studies and testimonials as evidence that you have solved this challenge for others. Be sure to translate features into benefits. Take the time to be sure the customer has validated that they like what you have presented as a solution to their needs. If there are concerns go back and address them before moving to the next step.
The system of selling recommended is based on values and integrity. It has six steps which you can remember by using the acronym AID Inc(which you have to bend a bit to make fit) this stands for six steps –Approach, Interview, Demonstrate, Validate, Negotiate, Close.