Observational drawing is good for you, right? I certainly think so. I have never been much into sitting in front of something for hours on end and trying to make an exact duplicate of it though. We have cameras for that. There are loads of things that you can do with a drawing that you can't do with a camera. One of the most useful is the power you have to recombine elements you have observed into entirely new arrangements. I use this all the time when drawing moving subjects like people or animals. The are almost always going too fast to get as much information as I would like so I have a couple of tricks for collaging several together. If the subject is say, a cat, it might well be moving constantly but it will also be repeatedly hitting the same sorts of pose or taking the same sequence of steps. If you have a few drawings on the go at once you can wait for each pose to come around in turn and work on the related drawing when it does. With people, I often like to draw them in segments, taking a posture from one subject, a hairdo from another, shoes from a third etc. This has the added bonus of making the people you ultimately draw unrecognisable should any of the subjects happen to see your sketchbook. It also means you don't have to gaze intently at one poor fellow for hours on end. Knowing you are being drawn is like having the sensation you get when someone is taking your photo stretched out over half an hour.Read the rest at his blog!