Great points as always!

As someone who "sells" online, as well, the most important point for me has always been that people like to buy from people they know. Therefore, let your social media posts be about allowing people who are interested in you to get to know you. As a result of getting to know you, when you simply talk about what you are doing — with products, art, services or whatever your calling may be — it's very likely that someone will want to check out one of your selling venues.