THE DEFINITIVE GUIDE TO INK PEN DRAWING TECHNIQUES

Inside of a pinch, I'd personally do this with saliva and my finger! Softer tones alongside ink lines create an exquisite contrast and could make your drawings a little more lifelike. Such as, if you would like draw a shadow or even a shade on the object, You should use standard ink for the thing, but for your tone of shadow, you can dilute the id