Build a net, do networking, talk to people.
Say what you do, show what you do.
Help those people.
Repeat.
Remember, it is always about mutual benefit, helping each other and being truthful.
Dripify is a great SaaS tool to engage with your ideal customers on LinkedIn and book an introductory meeting to your product. Make sure your initial messages are short and sound personal at first, if they engage then ask if they need support in what your product/service does.
Place yourself in the consumer's shoes. Try to think what a random consumer might think. Relate to that.
It's not easy trying to think from another, unbiased perspective when you've been working so closely with your product, that's definitely a challenge.
I'd start with looking at consumer responses first, how they react to different aspects of the product and different approaches. Use this information to craft the next piece.