First, let me say that Amy is so nice to work with. I wasn't sure how to measure my lens out, or what to do, but she was nice, and very patient with me as well. My leash got here very quickly and I couldn't wait to try it out. First you put it on the strap, and then place it around the lens. Let me say, I absolutely LOVE it! I love it so much! I don't have to worry about my lens getting lost, I always have it on hand. Plus its soooo cute, and very very well made. I'm no sewer, but I can tell you this thing is awesome, and totally rocks! Amy does custom orders, and not only does these little leashes, she also does camera bags, padded straps (the next on my wishlist), lens bags, she even has e-reader sleeves, and laptop sleeves! How cool is that! Plus she's so easy to work with, and the fabric designs are amazing!
So all in all, do I recommend Priddy Creations? Absolutely. Go check her out!
She also has a way cool blog too!