Have you ever walked around and seen a lawn crew servicing a yard with poor results? Or painters painting a house, resulting in a less than ideal paint job. Or a crew fencing a yard with spectacular results. Or a landscaper transforming the entire look of a house.
If you put a picture of each of these results on the front of a brochure, which would you want to work with? If you put a picture of the results you generate on the front of a brochure, would they attract customers?