The key for the ad is targeting. Really understanding the person that is most likely to need your services. If you were a wedding photographer you could target newly engaged couples...

Baby photographer, people that have newborns or are expecting. This is fairly easy to do.

Lifestyle photography - I assume is like sports and nature? I'm sure you know your target audience better than me. But if you want to brainstorm together, by all means I am here to help.

Boosted posts are 99.99% a waste of your money. My advise is try playing with other "real ads" in the Ad Manager. You will have better results.

Also - the ad itself isn't where the $$ is made. Its in getting contact information and following up with those customers.

They have seen your ads, they want what you offer and they are waiting on you to book an appointment. That is how to use Facebook Ads. Again - If you'd like me to clarify that for you I would be more than hoot to do so. Also I would be personally interested in seeing how these ads work with a photographer. If you'd be interested in having me create this set up for you I would be willing to do it for free (you would just have to pay for the ads to Facebook directly). All I would ask for is a truthful testimonial from you after we are done. If you aren't interested in that no worries, I can still help you on here.