This is what you need: a paper a pen a black pen an eraser
Decide what you want to draw. Take something simple to start with, for example your hand.
Draw around your hand with the pencil.
Be careful not to press the pencil to hard, it is difficult to erase if you press to hard.
Take the black pen and draw a straight line from side to side, start at the top, stop when you reach the fingers.
When you reach the line of the finger you make a little bow from one line to the other.
You make the same bow in the straight line everytime you get to a vertical line.
The tricky part is when the lines stop to apear, but if you are persistant the result is really cool :-)