I think I veer between a 6.5 and an 8, depending on what occasion I'm dressing for and whether my mood is affecting what I pull out of my closet.
At this point I think I've mastered most of the basics, and am on my way to developing a cohesive sense of my style that still allows me some flexibility and playfulness. I am having fun more consistently than I did in the past, and am MUCH more discerning about fit and quality and how much I like an item before I commit to keeping it around.
However, I'm also very tentative and inflexible on certain things. For the most part, I still don't like surrendering my waistline. I have trouble adapting my eye to new silhouettes and proportions, and if I decide I finally like a trend, it's usually years after the look has already become pretty mainstream. I'm resistant to move past my love of figure-flattering, waist-defining dresses, and am dreading an era when dresses become passe now that I've accepted how much I hate pants on my body. I am fearful of being considered too "faddish" when trying out new trends, and I sometimes worry that I am wearing myself into a style rut.
So let's say a 7.5 (optimistically.)