Great minds... I just went through the process of developing a 'style statement' for myself. I really focused on gathering images of things that made me happy (this seemed faster than trying to work out a statement based on what I reject- and of course, once I'd worked out the qualities that I particularly enjoy, it became clear why I rejected certain things). I looked at favourite memories, favourite food and drink, favourite places and activities, favourite interiors (what came through was lightness, delicacy, simplicity, austerity, warmth, softness, domesticated nature ie boating on the river, not the open sea, kitchen gardens and courtyards, not the forest). It's not that I don't like hiking, but I _love_ visiting kitchen gardens and noseying around!
So mine was "calm, a little austere, light, fragile, crisp, warm, soft but not sweet."
I've already found it helpful- when combined with my knowledge of how to dress my figure type, when I look at something I ask, does this item have any or most of these attributes? The 'not sweet' is an essential reminder, as many items in light or fragile colors/fabrics have very sweet detailing, and that is not me (that's why I put austerity in there!). Listing soft and crisp might seem contradictory, but for instance I recently bought a white cotton blouse in a very subtle lace. The cotton gives it crispness, but the lace pattern is soft- it works beautifully (the austerity is the shape- very simple, no collar, no cuffs).