I have a set that are completely unuseable. There are three different ones, and how they work is that they're open where your eyebrows are supposed to be - and completely closed around that. So how you'd go about shaping your eyebrows with them is utterly beyond me. You can hold one onto your eyebrow - the one that's the closest fit - but you wouldn't be able to do anything with tweezers if you had hairs outside that.
And, of course, if your eyebrows don't quite match any of the stencil models - uhh - the 'completely drawn on eyebrows' look isn't what most of us are going for, either.
I have NO IDEA how to work around that one. I like the concept of stencils, but....there's a design flaw in there that I'm not sure how to correct.
BTW - the post is still slow as treacle here - can't wait to get the new products to review them (I won't freak until it's been more than six weeks - your dollar is way down again, so everyone is buying American here).
I may be back in NYC soon - and looking for another surgeon. Apparently my operation didn't solve the problem. Blech. If you know any good endocrine doctors in your neck of the woods, give me a shout! I'll get to Ithaca yet

We now return you to your regularly scheduled programming.....