クロッキー帳

シンと静まった部室。響くのは、クロッキー帳に擦(こすれる)れる鉛筆の音(おと)だけ。

The club room returned to quiet. All that could be heard was the sound of pencil on sketchpad.

光源、つまり光の向きだな、それと陰影とかにも気をつけて、できるだけ正確に手元にあるクロッキー帳に書き取っていくだけ。

Light source, that is what direction the light is facing, also take care with shadowing. Just copy down into the sketch book you have at hand as accurately as possible.