Pencil Tool is used in the same way that you would use a real pencil for drawing.

Video Tutorial:

It has got three options like "ink", "straighten", "smooth".

• Choose the "Pencil Tool" from the tool bar.
• Using this simply draw some lines.
• Now choose the option "Straighten" from the "Tool Bar" below.
• Using this option the curves in the image will be straightened.
• Select the option "Smooth" from the bottom of the "Tool Bar" now.
• When the image is drawn using this option, the sharp curves will smoothened to an extend automatically.
• Now select the option "ink" from the "Tool Bar".
• Try drawing using this option to have the exact image as drawn.