Etsy - Another Step Closer

On Sunday I did a banner and an avatar for the Etsy shop. Nothing very artistic. I'm not that good with computers and I'm nowhere near finished working on what I wanted to do for the artwork.
Today I set up my account as a shop. There's nothing listed yet but I have done one draft listing to see how it works. I need to get better photos of my items and work on my policies and stuff. Don't really know where to start on that. I'll have to have a nosey at other folks to get a better idea of what to write.
Question: Can you edit a listing once it's published? To add more photos or more places to send to?

Just stitched out this on a tea towel