This is a pattern for a simple bi-plane silhouette with propeller, in conjunction with Britain from Above :)

Gauge is not essential for this pattern, but I recommend using the correct size hook for your chosen yarn- I used 3mm hook and 4 ply, but I’m sure it would work with 4mm hook and dk yarn.
Apart from hook and yarn, you will require a darning needle and a button (for the nose of your plane), ooh and some toy stuffing.
I am unsure of yarn amount required, but less than one ball/ hank/ skein.
Please let me know if I need to make any changes to this pattern.