Hi Ruth,
I don't know if i'm much help after all these comments, and I'm definitely no expert, but I think as a shopper I have a few problems when browsing your shop and items:
#1 all that has been said on photography is true, but what bothers me most is that there's only 1 photo of each item. I can't see its fall, other angles or ambiance.
You can see great examples in this shop:
http://www.etsy.com/shop/NestPrettyThingsShop(I'm not referring to the styling, but to the variety of frames in each listing)
#2 Item description is lacking a lot of important details. It has been written before here, but it's so important I'll mention it again :)
#3 Watermark/signature - try and use a consistant size, font and place for it, so it won't "jump" when browsing through your items and attract unwanted attention. It's your items you want your shopper to look at, not the mark.
Wishing you lot's of success!
Lee