I have a feeling that many will think this is bullshit which is fine, if I am right I hope it might be helpful to some.
I recall seeing here and also hear a lot about the idea that as a beginner your visual memory is very poor so that say when you are doing something like a study you really struggle just because you look at the drawing or photo or still life or what ever and look back and your paper you have already forgotten what there and its very difficult keeping things accurate. Its something I have experienced my self. Obviously once you put things completely side by side like when doing a Bargue or if you are doing it digitally you could place the thing you are copying right next to your copy.
There were also tips about when doing it in life drawing to quickly flick your eyes back and forth from the figure to page to see 'movement.'
Its all useful.
I am currently taking the CGMW dynamic sketching class and something occurred to me that might be helpful with people having this problem. It seems to be helping me too.
I think its wrong that its a visual memory problem(at least to a large extent). I don't think that the more experienced artists simply remember the reference more clearly. I dont think its simply the case of looking longer to try and take in the information, but DO LOOK FOR LONGER! I think its much more largely to do with translating. How much you are simplifying things and breaking them down.
Its very easy to remember the relative size of a couple of spheres and cubes and work from there and that's what experienced artists seem to do when they draw. Breaking things down in your head like that is hard. It seems easy but it takes a great deal of practice. I think once you notice this it becomes easier to tackle than trying to think of ways of improving your visual memory.
Just an idea. Back to drawing.