I'm an artist and a teacher. As a teacher, I stumbled on a way to evaluate sculpts in process using Picmonkey, the photo editing site. I love Picmonkey.com!
If you make antique inspired works, it is helpful to see how your work is comparing to the original antique inspired work. I make Izannah Walker inspired dolls. I'm fine with them being a bit different from the originals and having my own mark. But I do like to get in the ball park. Anyway, here is a tutorial for evaluting sculpts in process against original antiques.
I hope you find this technique helpful!