My #1 piece of advice for anyone struggling to find their ID - stop focusing on what your body looks like
I think the biggest mistake people new to this system make is treating it like a typical body typing system, where surface level observations about how someone looks in a bikini will lead you to their image ID. Imo, the first step to figuring out your ID is to let go of the idea that this process will tell you what your objective body type is and how others perceive you. Kibbe is a styling system - figuring out your ID should be 90% focused on how clothes look on you and tend to fit you, and what makes you feel your best. What should you be mindful of when putting together an outfit?
Not only do most of us not have the most accurate perception of our own bodies, its also v hard to accurately portray what you look like in photos and accommodation requirements are often just not obvious from what someone's body looks like. It may be fun to hyper-analyze verified celebrities and try to come up with more concrete explanations for nebulous concepts like 'Kibbe width', 'Kibbe curve', 'Kibbe petite', or whatever, but the reality is that those are just abstract terms used to describe what you should be mindful of when shopping. I see why it's tempting to look for concrete patterns or distinct physical signs of being a certain type, but you're ultimately doing yourself a disservice by trying to figure out if your bones are blunt or if you have a V-or H-shaped back, because that's not what really matters!
Ignore what your body looks like and how it compares to celebrity examples. Aside from height limits, there's really no objective way to rule out one type or another and that's kind of the beauty of it! It's not about being conformed to a category based on your body shape, it's about gaining an understanding of how your body tends to interact with clothes and what you need to be conscious of to dress in a way that's harmonious to you.
Do you find that defining your waist makes any outfit look better, and that straight cuts never look right no matter how perfect their fit? You probably accomodate curve! Do you look easily overwhelmed by large details, prefer dainty jewellery, and like your pants to show the ankle? You might accomodate petite! It doesn't need to get more complicated than that. I don't want to downplay how hard and frustrating of a process figuring out your ID can be, but it gets a lot easier when you take the focus away from trying to find what category your body fits into, and towards what considerations you should have in your outfits.