Is smaller better?

I created and finished this beaded painting in just a few day's.  That is because it is small, only 5" by 7". I love the looks of the pictures, believe me you cannot tell how much better they look in person than from the camera but most often the pictures I take come out pretty good.  So I alway's wonder why they don't sell. They are unique, gorgeous and I keep my prices very reasonable.  So I am wondering if it could be the size.
Maybe this is the type of thing were smaller is better, just a little accent piece.  Hmmmm.  could use some input here because I do not want to stop creating them but if they don't sell there is not much point.  I have a pile of them just taking up space in my studio.