Cut out your felt. You will need yellow and green (for the top).
You will be cutting out a vaguely butterfly shape and a long skinny piece with a bulbous bit at the end from the yellow to make the body of the squash.
From the green you will cut a small circle and a short skinny bit for the top.
Once you have stitched up one side start back down the other. Make sure to leave a space to stuff and flip.
Straight stitch the green circle to the skinny green rectangle.
(I am so sorry I don't have a photo of this... I forgot to snap it in my rush to complete the five squashes I was making)
Flip the little "cap" you have made inside out. Place a small about of stuffing within.