How to make your own large painting
Now, measure your canvas. Mine is 36 by 48 inches. Write down your sketch measurement, 8.5/11 and then double it. You get 17/22. Now add 8.5/11 to that to get 25.5/33. Do it again and you get 34/44. This is pretty close to the dimensions of my canvas. In fact, it's close enough. So, now I know that I'm going to expand my sketch from 8.5 by 11 inches up to 33 by 44 inches which is 4 times the original size. Four times. Remember that.