Copying is copying and pasting from a book, without your own knowledge of analysis and sketch, just copying.

Sketching is to observe an object with your own eyes in different light and dark conditions and different unfamiliar environments, and to present this object more realistically and reasonably on paper with your brush and sketch knowledge.

If you have a solid basic sketch skills (from the basics)

Geometric plaster-fruit still life-plaster head) sketch is not difficult!

But now a lot of people want to hurry up-

Everyone wants to fly without spending time and energy-all the skills of sketching can be mastered at once.

Sketch is a systematic project, without the most basic sketch homework, it is difficult to skip the basic sketch to draw advanced sketch!