Photoshop works too, but I just measured my suitcase 88 and built it to scale. the “tolex” is thin vinyl but looks real enough from a distance.
The case was built with very thin 1/8” plywood. Vinyl was cut and glued for “tolex”
The handles are made from an old extension that I painted black. That’s grey duct tape on the ends
The cabinet is a solid block of wood. The grill cloth is printed (in color) on paper and glued to the block! The “Fender Rhodes” logo was done with a silhouette machine and 2 silver/black layers on vinyl. Fun weekend project.
