I am wanting to make a window seat cushion out of the black/white Lokki fabric, And use the Pieni Unikko red fabric as the border. Would this cotton fabric hold up or do I need to use the upholstery fabric? Ii see you have the Pieni Unikko red fabric in upholstery material but not the black/white Lokki fabric. I also read in your descriptions that you suggested you could use these cotton fabric materials to make a bedspread, so I was wondering if you thought this would be suitable for a window seat?