custom made tire cover

Last summer I bought my '07 Jeep Wrangler. The previous owner had added some stickers and a spare tire cover to make it look like he had the "Call of Duty" package. That's not my cup of tea, so I took that stuff off. I would like to add my own design to the spare tire cover. I actually have the design ready to go on Photoshop. I though maybe I could take it to a place like Staples, have it printed as a vinyl sign, and then use a strong adhesive to glue it to the old cover, on top of the Call of Duty stuff. I imagine, though, that there are probably some adjustments to this whole plan that would help things turn out better. Any advice?

This is a good way to go buddy, not my instructable but well worth a look

https://www.instructables.com/id/Halloween-Tire-Cover/