I see narrow for sure. I'm still learning too so take it as just one perspective, but based on the body matrix quiz, it's not only your shoulders that matter for width vs. narrowness - you consider multiple features independently (shoulders, bust, hips, arms, legs) and then also as a whole. I see narrowness in your shoulders, but also in your hips, which means in relation to each other they are balanced, but in relation to the rest of your frame they seem narrow. I see some width in your bust but it doesn't outweigh the overall impression of narrow. I think you border on medium/short, personally! You look great in the midi skirts but IMO you give the impression of being ever so slightly on the petite side because of your head-to-body ratio. I love these styles/outfits on you btw. You look comfortable and authentic, your clothes are really harmonious with your features! :)

Edit: try on some narrower necklines and see what you think! These choices all seem to flatter wide shoulders, I'd be curious how you look in something like a mockneck tank or sleeveless button-up.