The original seat for the wheelchair was really uncomfortable and caused me to sweat a lot. I found a pic upholsterer called Cherry Upholstery who offered to make a custom seat for me. He made the seat from scratch and embroidered a skull into the seat.
He also used some El Wire in the design so the beading glows at night. He did such a good job I asked him to customise the standard seat for the mobility scooter.