I'm able to prop the phone up on my shoulder without twisting too much to take a picture of my back. But I might be pretty flexible. Else, you'll need to set a timer or have another person take a photo of you.
Start date: Sept. 2013 at 216lbs
End date: Winter 2014 or sooner, whatever weight gives me a flat stomach. I'm apple-shaped.
216: size 16 jeans, XL shirts
185: size 14
170: size 12, L shirts
165: size 10
159: size 8, M shirts
150: size 6
140: size 4
*Note: these are the sizes I usually fit when I try on things at Walmart/Kohls/JCPenny/Sears etc. ALL of them practice vanity sizing. So ten years ago, I would probably be a reasonable size 8, which has become a size 4 today because America is stupid.