When it comes to images through paint you may decide that choosing an image is unnatural. Now the images forming from automative processes may be negative but perhaps truths. So you want certain images to form, you are hoping now. They can’t. Positioning a board at feet level may be rightly done. As a mirror to your world. I know I hope for bodies standing, maybe a house. People and places within me.
To paint on a small canvas is maybe partially worthless. For size itself is reality. This is not to say to never do so, just a masterpiece must be life size, a window or mirror.