If you want to see a prime example of an artist who is going a great job of makering themselves and their work online, please visit the website of Soniei. She’s using a website, eBay sales, social media, a blog, video and of course imagery to share her paintings and the vision behind them.
Look how she uses YouTube videos to document the process of her work. Aside from being interesting to watch, it really makes you see the value and time that goes into her pieces. It connects you to the artist. And all of that makes it a lot more likely you’ll buy one of her pieces.
Her whole site is great; very professional without being sterile. Her blog has useful articles like 18 Tips on How to Sell Your Art on eBay.
Visit her site and be inspired.