Softness and hardness of a simple pencil: how to use it?

New article "Softness and hardness of a simple pencil: how to use it?" from Ekaterina Kryukova to read and watch click on the link: https://jotto8.ru/blog-eng/softness-and-hardness-of-a-simple-pencil-how-to-use-it

#Pencil #Soft #Hard #Paper