I have a super new shop so take this all with a grain o'salt for what you will :D
Your first set of photos on a white background are great- I love the model you chose and its good she is wearing a simple black outfit, not too distracting, The bottom images on sand and other surfaces would look so much better shot the way the newer images are. I think its totally worth it to reshoot them. Also, your skull bracelets certainly qualify as being october and halloween related- I think those search terms are trending heavily right now, include them! Maybe they could also be tagged as pirate costume jewelry, etc etc. I'm sure theres still some pirates who will be trick or treating this year thanks to pirates of the Caribbean... ech...