I need help (in description)

so I have been looking into getting my own custom deck printed out. (This is my Julius Caesar design). And I went on makeplayingcards.com and I couldn’t find out how to keep the whole card custom. I want a custom front and back but I also want the letters/ numbers and the symbols custom too. Did I miss it or is that feature not available. If not is there another website I could go to for that?