Specialize. When you are first starting out. Choose 1 thing you can be amazing at. So instead of offering Websites, PPC, SEO, Email etc, choose 1 and be the best in your neighborhood at it.
Next, get your first client, this is by far the hardest part, so do whatever it takes to get your first 1-2 clients. Then try your best to blow them away with your work. Give them more than they paid for, go above and beyond. Get reviews and testimonials, and don't stop reaching out to other prospective clients.
You got this!