Not all PDFs are created equal. A truly effective guide for rapid portraiture should include the following core components. When you search for or create your own resource, ensure these sections are present.
In a traditional academic drawing, an artist might spend an hour measuring the distance between the eyes. In a 15-minute face, you use rules of thumb. The eyes are typically one eye-width apart. The bottom of the nose is halfway between the brow line and the chin. The mouth is roughly one-third of the way down from the nose to the chin. draw faces in 15 minutes pdf
Now that you have the map, you start placing the landmarks. This is the phase where most people panic, but you shouldn't. The key here is proportion over detail. Not all PDFs are created equal