Dear Designer,
Great submissions to date - we appreciate the work here!
Many have more of a Big Company/Corporate look and feel, although many of the business owners we are targeting run small companies, often industrial or manufacturing businesses.
Accordingly, we'd prefer to see a vigorous 60-something man in non-suit biz attire (or more business casual), say slacks and a golf shirt. And, maybe he is walking out of a warehouse or other industrial setting vs. in a suite and carrying a briefcase.
Hope this additional direction is helpful!