Copying a drawing using step-by-step instructions is a great way to help children learn observational skills, size and scale and recognising shapes.
Note how this particular drawing of a LEGO Stormtrooper is made up of lots of 2D shapes and very simple lines. If your child finds a part hard to draw, encourage them to break it down into separate 2D shapes and then simply join them together.
This is also a great opportunity to introduce, identify and discuss 2D shapes. Also mathematical vocabulary such as horizontal and vertical, and convex and concave.