A "sketch" usually implies a quick and loosely drawn work, while related terms such as study , modello and "preparatory drawing" usually refer to more finished and careful works to be used as a basis for a final work, often in a different medium, but the distinction is imprecise. Underdrawing is drawing underneath the final work, which may sometimes still be visible, or can be viewed by modern scientific methods such as X-rays. Most visual artists use, to a greater or lesser degree, the sketch as a method of recording or working out ideas. The sketchbooks of some individual artists have become very well known,  including those of Leonardo da Vinci and Edgar Degas which have become art objects in their own right, with many pages showing finished studies as well as sketches.
Stock Photo - naked man, hand drawing original , pencil technique
Naked Standing Model Pencil Drawing Stock Vector - Illustration of girl, vintage:
Fig leaves and pencil drawings: What 90s sex ed taught me 5 Shares Alison Bough It all started circa with a sex education book called Girls Talk The problem was, as the sisterless daughter of a single father, I didn't have any girls to talk to. That was ok because The Book appeared to have all the answers. I read The Book every night and studied the pencil drawing of the naked man drying his hair with such care.
All attendees are expected to disrobe shortly after their arrival. There are closets and adequate space near the front to store personal belongings. If interested, just login to this site, find a session on the calendar, and click to sign up for it. While this is definitely a drawing group it's also a bunch of guys, naked. The drawing group is designed for all levels of artists with the goal of improving their skills and building up their portfolio of work; novices are welcome.