Hi Jessica,
Re photos I will say that I am not a photography expert, however I've noticed a couple of things you might find useful.
Firstly, it looks like you use a lot of fabric background for your pictures. The problem with most fabric is that it absorbs light and makes things look dull. If you want to continue using fabric as a background you'll probably need to brighten the pictures.
There's a good photography program you should try - it's called Fotor and as far as I'm aware it's free. I used it to change two of your pictures (annoyingly etsy won't let me drop them in here so I will try and convo you).
Secondly, your items don't fit in a number of thumbnails which means potential customers can't see the whole item. Sometimes this isn't a problem but I would recommend either trying to fit the whole thing in the picture or focusing on just one element of an item.
Hope this helps, happy sales