grid

Connect the grid marks with very thin and light pencil lines. You will be erasing them after you are done.

copy

Continue with the pencil to place all important shape outlines. This will help you to position the values in the right spots.

Switch to a black pen or an ultra fine point marker!

Copy each square exactly as it is: include all values and details.

Do not outline anything!

If it helps - cover the image with sticky notes, leaving only the current square to work on.

Be patient. Place the dots accurately!