I usually sell better online when I am working in new paintings and posting them to my Facebook page, as well. The more we reach out, the more likely we are to sell. That being known, we have to keep trying new things, like approaching business owners to get our paintings seen, teaching classes, online or in person, and networking. You never know when a contact will decide now is the time to buy one of your paintings, maybe it takes years of showing your work, but the more avenues we market ourselves, the more exposure. Also, they need to be smart moves, not just throwing ourselves out in every venue, but choosing them wisely.