Graphic Designer for Promotional Postcard for Jewelry Company - Need Photography/Imagery Help Too!

I'm seeking help creating a promotional postcard for my new jewelry company that will be used to give out at a vendor show as well as potentially mail out. The challenge is I don't have very many lifestyle/product photography yet so if you are able to assist with that (if AI would work for example) that would be great. I would love if someone has strong marketing/visual expertise to help convey my brand in an appealing way that sparks curiosity and interest. For example, I'm not sure if it is better to just showcase one pendant design on the front of the card or better to include a whole grouping together. So if you have strong experience in how to best visually convey products, that would be terrific! Looking forward to hearing from you! My website (which is also a work in progress) is statisdesign.com if that will help to take a look.