noun, noun or participle which takes 'suru'
rough sketch; underdrawing; preliminary drawing
A rough sketch used as a guide for a finished picture; similar to a draft or layout drawing before final inking or painting.
See also: 下書き
絵を描く前に、まず下描きをします。
Before drawing the picture, I first make a rough sketch.
この下描きをもとに、色を塗っていきます。
I will add color based on this underdrawing.