Out of some frustration not being able to get a likeness. I came up with this technique. I’m sure it’s not new…
I use this small easel with tracing paper and line up my laptop next to it with a portrait loaded.
I use a ruler to measure the reference from the bottom of the chin to to of the head.
I Mark the measurements on the tracing paper.
I draw the outline using macro angles.
Then I place the tracing paper over the reference image to judge my accuracy.