I was asked a really good question about what size paper I did my lion drawing on. I crop most of my scans that I use to make the tutorial and forgot to mention that! Here's a diagram showing how the drawing fits on to an A4 sheet of paper. And I used printer paper for mine, so you don't need any fancy paper either. You don't have to measure it out exactly either, this is just to give people an idea about the size/proportions if they were confused by the cropped scans.