I'm doing Design & Innovation with the OU at the minute, and I'm constantly being told that I'm not uploading enough sketches. I know that this is just to show my work and stuff, but I generally don't sketch too much. I keep a couple of books for general doodling and getting basic ideas down, but more often than not, it's just for brainstorming. They've also suggested keeping a design diary - they've got no chance of that. Tried and failed at diaries many times. I just don't find them useful. How do you use either?