Translation of "Sketch" in Chinese

Jiro made a sketch of Mt. Fuji.

次郎畫了一幅富士山的素描。

Can you sketch it for me on this piece of paper please?

请你帮我在这张纸上画个草图。

This project grew out of a sketch I made on a napkin at a party last year.

这个项目是由去年我在一个派对上画在一张纸巾上的草图开始的。