If you are only selling your own work, then the name should have your name in it and it should be short as possible for marketing purposes.
Easy to remember, easy to type, promotes your name because it is your brand and makes for a shorter url for making link and a shorter email address.
If you do a lot of online marketing, this will save you a lot of time and typos. The typos from you side but also from the buyers side.
I like Melissa's idea but I would mostly use the Andrus Photography, keeping it as short as possible.
I used to use FrameHouseGallery for everything. I can't tell you how many times I have had to repeat that over the phone and then still get people call and say, I must of wrote it down wrong because the email I sent you keep coming back.
I now use FASGallery and it works much better.
That would be my thinking for what it is worth.