Cushion to start – that was not the plan

There is a cushion at Hardwick Hall, detailed in Santina Levey's "The Embroideries at Hardwick Hall", which I have drooled over many times before (pictured here). Now that the Nordmark Kneeling Pads are finished, I thought I might make myself a cushion for use at events, and I want it to be unequivocally mine, so...