Most private lending gurus will tell you to prepare an elevator speech--a 30-60 verbal advertisement about your investment opportunity. The goal is the attract a person's interest in your deal.
However, most people respond negatively to unsolicited advertising. If you want to raise private money, you first need to Build Relationships with potential private lenders. The goal is to get them to like you, respect you and trust you. Of course, you do want them to be interested in your opportunity, but the kind of "in your face" approach that is often recommended, sounds cool but is usually a turn off.
First demonstrate that you are interested in them, and then draw them into your opportunity.