Question: how to do observational drawing?
Answer: Tip 1: Look at what you are drawing. ...  Tip 2: Draw from real objects whenever possible. ...  Tip 3: Don't trace. ...  Tip 4: Understand perspective. ...  Tip 5. ...  Tip 6: Be wary of ellipses. Tip 7: Keep the outlines light. ...  Tip 8: Have a Good Range of Tone.