Trying to keep updating

This is just a rough sketch of an old man done from photo reference. Took about an hour and a half to do, and was really frustrating towards the beginning stages. I rarely ever do these and I probably should start doing them daily because it definitely helps. The funny thing about it was, I didn't really learn anything until about 2 days after I had finished it. I'm not really sure why, but all the little realizations and epiphanies that come from doing work from life and reference didn't hit me until way later.
I definitely realized that one of the biggest things you've gotta do when making these studies is be very conscious and aware of what you're doing and why. Just blindly copying the image for the sake of duplication is almost pointless, you really need to copy and even slightly exaggerate or change things about the image as you're doing it, just so you're making lots of little mental notes. That's probably my biggest problem with the book "Drawing on the Right Side of the Brain," is the fact that it encourages you to zone out and become a human copy machine. If you're trying to get good at working from your imagination, you need to be paying attention ALL the time. I got lots to learn.