How to ENLARGE a PICTURE for painting using the Grid System The grid system is an excellent way of creating a larger or smaller image from a reference photo, when you don't have access to a computer and printer. It is also great for developing your drawing and observation skills, as it really makes you look closely at the proportions, and how big or small things are in relation to one another. For the full 12-minute video with little ole me explaining the process, here is the link for you: https