Last year my dentist/denturist asked my what I wanted my teeth to look like!
It was unreal, trying to develop an aesthetic preference for teeth. It was actually quite eye-opening. I did find that I had a very strong opinion about it. I haven’t quite gotten to the end product, but I now know what I want.
I recommend photos, but also to be careful in explaining what you like about the photo. It’s easy to latch on to one aspect of a style, not realizing that an attempt to reproduce other aspects might end up completely ignoring what drew you to it in the first place.