Who do you want to sell to?
How do they get their information?
How can you get yourself into that?
Basically, profile your ideal client(s). What details can you list about them? What appeals to them? What scares them? What do they want? What can they afford?
Sure, take some input from the prominent competitors around you (if possible). But don't just emulate them. Meet their game where you can and up the ante. What are they missing? Where can you differentiate from the 'me-too' same-same? What gaps can you exploit? (May I suggest that you mention/illustrate actual project prices. Folks are hungry for price information, not just blah about 'cheap' or 'affordable quality' - they want the real deal.)
Apart from merely mailing your prior clients (a referral program), consider how they came to you. Is there a chanel there that you can identify and exploit? If that is Facebook - cool, but I doubt it - social media is a follow-on game, not a generation tool.
Do you have a website? Is it optimized for inbound inquiries? Or local search even? Is it about you or does it speak to the emotions/desires of your target clients(s)?
The rise of Houzz and HomeAdvisor speaks volumes about the market desires. They pander to people's fears of being disappointed - of being ripped off - of having a lousy experience - of getting poor information - of getting hammered with sales pitches. Answer those via whatever media you choose and you are golden.