I am new at this whole Etsy thing, but I sign my name in a corner in a similar color to what I'm painting over so it doesn't stand out but it doesn't totally camouflage and get lost. I don't know if this helps, but whenever I painted items for my friends and family I would only sign my initials and the year I painted the item. But I think a signature is more like the artist is taking "ownership" of the painting and gives off a more professional vibe to the buyer. Your paintings are beautiful by the way! Very talented :)
