I'm certainly no expert but here's what I think...
I have to agree with the others that there is always room for improvement on pictures. Personally, while your background is pretty, I find it a bit cluttered and confusing and your items don't really stand out. For me, this picture is much more clear and makes it so easy to actually see your item:
https://www.etsy.com/listing/150453779/guest-book-large-size-for-rustic?ref=shop_home_active_14For titles & tags - I would suggest trying to use love letter, love letter box in your titles for the wine boxes. You have it in the tags but not in the titles. You can try it on one or two to see if it brings in more traffic.
As for the ratings affecting your views & sales...I wouldn't be put off with the stars but would take note on the comments. (I'm one to actually read the reviews to make sure that the stars match the comment). Your reviews are glowing about the actual product- it's just the shipping delays that have led to your less than 5 stars. The shipping delays could put a customer off especially if they have to have it for a certain date. As the others have said, try your best to ship out as early as you can and if there are any delays, communicate with your customer before they contact you.
Just my two cents:)
BTW: I think your rustic books are fabulous!