Draw two thin lines parallel at an angle.
Top and bottom of the carcass
Round the edges at the top.
Do the same at the bottom.
Draw a rectangle in the upper part.
Erase the unnecessary lines.
Separate the rubber with the help of the lines. We need it for the convenience, to hold the pen.
It has a sharp shape.
Add another small detail at the bottom.
Clip helps us to attach the pen to a folder, a pocket, a pencil case. Correct the elements of the drawing.