Hi Don. There are three key things that will help you move closer to your goal:
1- The first one is that you develop a strong competitive advantage. Your current pitch is a bit vague and doesn't make it very compelling. You sound like another photographer amidst many. Nothing to make you stand out. This can be summarised as your unique selling proposition or on-point proposition. Withouth this none of your marketing will ever take off as you'll be trying to be too many things to too many people. So rather than broadening you want to narrow down. That's the key to effective marketing and without this all subsequent steps will be much more difficult and costly.
2- The second really important step is to understand the target market you're going after. After all if you can't describe them well, you can't really target them with your adds. To do this, If you have existing customers decide who of those is your ideal customer and learn all the demographic and psychographic information you can about them. This creates a clear picture of the target market you're going after. You've mentioned small business owners, entrepreneurs, and business professionals but to get laser focused it's best if you start out with just one of those and get really clear about them.
3- The third component is that you understand your target market, their pains, needs, wants, challenges, frustrations and aspirations. Also find out what you're competition are doing and be different. Offer better quality, better service, better pricing a better solution a better technology and whatever you can think of to clearly differentiate and become the go-to photographer in your niche. If you have an existing customer survey them as to why they used you, what they liked, disliked, if they used other services besides you, what you could have done to win that other business, anything else they like to add that will help you improve your products or services.
If you can fine-tune the two elements described you would create a sales funnel where you can put x amount in to take y amount out. That means having an add that operates like an ATM. Only at this stage can you outsource everything in the business and have it generate residual income without you having to be there.
Tip: Low-cost sales generation. Whilst you figure the above three foundational elements out, you can find someone who works in a non-competing complementary business servicing your desired target market and structure some kind of deal for introducing you. Maybe reciprocate and do it for free or simply do a barter system or small comission, up to you. Example a web designer can introduce you to take all the 'Meat the Team'' and 'Executive headshot' pictures. In return you can introduce him to owners who need a website makeover. Ask for referrals from existing clients.
Best of success!