tuan

Hi all my questions is so simple (sure because I´m learning right now how to use Affinity). I have drawings and my only concern is: 1. replace black lines made by pencil or carbon with gray color 2. some areas in color (small area with red) should not be replaced that`s all I´ve try to follow some tutorial but I can not get the result that I wish could anyone help me? find attached drawing file only for your info thx tuan