Hi Ali,
I love what you're doing with your shop photography - the composition of your photos is gorgeous, and has the same elegance as your labels and branding. Nicely done! The Lavender Chamomile is probably my favorite shot - the lighting is great. I like that while consistent, each photo is slightly unique - great to have that little variety to keep the viewer's interest. I would play with that more - maybe put the embellishment on the right of the candle in some shots, or on both sides, to mix things up.
I agree with Teresa that getting more light on the label would be great - it looks like there are custom illustrations on each, which you should definitely play to your advantage. I agree with your point about more listings too - great that you're already working on it. I like your "buy any three" listing - you might consider a "buy any two" listing, as well, even "buy any four", etc.
If you have the ability, you might consider product shots in a home. What if you could show a collection of candles in a model home (e.g. a coffeetable or end table next to a nice couch), or a favorite corner of your own home? Whether burning or not, it could help people to imagine how the candles could look in their own home. I can imagine these as nice statement pieces on bookshelves too, or window sills, bathroom shelves, breakfast tables...
Your listing descriptions are very thorough - well done. A few things here: they seem a bit thick at the top - possible to make your paragraphs a bit shorter? Personally, I would put the product details near the top of the listing. Lastly, you mention that I can request variations to my candle - what does that mean? What options are available?
Best of luck - your items are beautiful!
Charity