Where can I sell my artwork online

Once you've done a great job cleaning up your work (begone, stray lines), you can start looking at your options to sell your art online.

These are ones that I have worked with. 

Etsy

Etsy is cool because you can have your own store while paying relatively little. You pay Etsy a bit to list the piece (every time) and you pay them if you sell something (every time).
Etsy: Tips for Selling Fine Art https://etsy.me/1D58Tzc

Society6

Society6 does most of the work (and takes most of the money)
Society6 instructions: https://blog.society6.com/start-to-finish-how-to-sell-your-artwork-on-society6/

Print on Demand

Printful is a company that links up with Etsy and other stores so that if you get an order, Printful will actually make the thing by fulfilling the order and shipping it on your behalf. It's pretty neat.
Printful: https://www.printful.com/blog/how-to-start-an-online-store-with-printful/

Redbubble

I have a Redbubble account but haven't used it in forever but I know it gets mentioned a lot so here. Redbubble: https://www.redbubble.com/about/selling

Ads

If you want to sell your work, I suggest paying the website at least a dollar a day to advertise your listings so that your stuff shows up when people search for things. Etsy is pretty good about this.