These are must have supplies in my bag.
Faber Castell--Graphite Aquarelle
Let me show how it works.
Sketch the kitten image with 2B & 6B graphite pencil first,
先用鉛筆 2B & 6B 畫出草圖
and paint with watercolors, no need to erase extra lines.
the pencil is water-soluble, so you can see all lines are dissolved in paints with water.
Super easy to work with when using water-based paints.
Btw, I painted this kitten using a reference photo of the street cat--Bob. :)