A detailed sketch is less detailed than a portrait and more detailed than a 30 minute sketch. These drawings are made on beige colored Strathmore sketching paper with brown, gray and white pastel pencils. This is available in 15x21 cm (A5), 23x30 cm and 28x35 cm format. Adjustments of the colors are possible. Look here for the rates.
A detailed sketch can also be made fully in color.
She also makes detailed sketches of people.