I recently got a Cricut Maker 3 and needed a dust cover for it. There was a pattern on Cricut Design Space for purchase but I decided I wasn't keen on the design so I created my own.
From the 22 1/2″ x 4 1/2″ pieces create the front pockets. To do this, stitch the outer and lining pieces right sides together along the top using a 1/4″ seam allowance.