Take a photo of your drawing, put it into a digital program (or use tracing paper), and draw the "correct" Proko version over your own to see exactly where your proportions went wrong.
Use the Proko practice tools or sites like Quickposes. Start with 30-second gestures to force yourself to see the "Big Shape" rather than details. Proko Basic Drawing BETTER
Every Bean must have one side that is compressed (pinched) and one side that is elongated (stretched). Take a photo of your drawing, put it
Boxes make it easier to see the front, side, and top planes of the body. Every Bean must have one side that is
Practice lines that start thin, get thick, and end thin. This adds life and "flow" to your lay-ins. The Secret to Better Circles and Ovals
Fill one full sheet of paper with ovals of different sizes and tilts before every Proko lesson. Evolution of the "Bean"