P2_ keep using makers on the back.
(继续上麦克笔在描图纸的背面)

P3_ put a mesh underneath the page for speaker texture.
(把网眼垫在描图纸的背後 用来画出喇叭布的质感)

P4_ hold pencil side ways to apply dark cores.
(斜斜的抓笔 来画出阴影)

P5_ add shadows on objects.
(加上影子在物体上)

P6_ white pencil to give high light and part lines.
(用白色的色铅笔 加上光影和分模线)

P7_ Material and tools. always remember to keep the pencil sharp.
(材料和工具 永远记得削尖铅笔)
