Congratulations on your sales! And yes, there are a lot of platforms online where you can advertise your work. We live in modern times, and we are now in the era of self-publishing. Thanks to the internet and the advancement of technology, it is now possible (and very advisable!) to self-publish. If you donít get yourself out there and create your own platform of marketing in arts, youíre missing out on a lot of great business and personal opportunities.
This article that talks about Marketing in Arts,
specifically, helped me jumpstart my career. Check it out for yourself, and hopefully it can help you get more exposure for your art