Some sales people make presentations that tend to be too long and vague. They do not appear to ever get to the point. They may be pleasant people, but customers tend to subconsciously avoid seeing them because they don't really follow this sales person's line of thinking. If you tend to be very nice and very sweet, and everybody loves you, take note. You may be boring the rest of us. Make your points clearly, summarize often. Use visuals and put your proposal and summary in writing.