Place your circular object to draw around in the centre of the plastic window and draw around it with a black marker.
Using the black marker pen colour around the outside of the circle to make the night sky
On 1 window colour in the circle black as well.
On a different window colour in the circle with a yellow marker pen
Using the circular object draw around it to create waxing and waning moons on all of the other envelopes.
Carefully using the black and yellow markers colour in the waxing and waning moons on the envelope to create a sequence of the phases of the moon.
Before you proceed make sure that your moon phases are completely dry.
Carefully place an envelope in the order of the moon phases over each of the battery operated fairy lights. Attach in place on the wire with a small clothes peg.
Hang up in place and then switch on to display and lit up lunar cycle with your very own moon phases night light or display.