Life… can be so hard. In theory my card image files (like what you see above, the Ace of Swords) should be perfectly centered. But it’s not. As you can see after I superimpose the template guidelines that the manufacturer sent me. Look at where the blue line ends on the left side, then look at where it ends on the right– it’s not symmetrical. Also, all content must be within the blue line. Crap. Oh.. F me.
So let me explain before you’re like, wow, you have no idea what you’re doing. I had previously formatted these image files toward Manufacturer A while I was working on some digital sampling with Manufacturer A. For some reason I assumed there was some sort of industry standard, so what works for one should work for all others.