There are two basic types of marks you can make with pen: dots or lines. You can vary both types of marks in size, volume and arrangement. The marks will seem lighter if they are spaced further apart and will seem darker if they are close together.
Ballpoint Pen Marks
Gelly Roll Pen Marks
Fine-Line Pen Marks
Artists’ Pen Marks
Different Marks Made With Pens
Different types of drawing pens have unique characteristics and will make the same types of marks in slightly different ways. Experiment to find the drawing pen that best suits your pupose
Ink is great for quick sketches. Inks come in full-strength liquid form. You can create softer variations of each color by simply diluting them with water.