The 
portion of it was just as simple with leather as any of the other stuff I’ve made. I’m not sure I can speak to the average plug-&-play user as I’ve got a decade’s worth of experience using Illustrator & Photoshop, but I posted in a previous thread my method for prepping svg files of stuff I find online (like the artwork for this HP tag): My Process for Glowforging Images Found Online.
My knowledge of design aside, this project was pretty easy to throw together. It took me maybe 25 min or so to go from thinking the idea up, finding the imagery, setting up the file, sending to the , cutting & engraving. I had to look up how in the world to sew the leather together online but there’s a ton of fairly straight-forward tutorials on it.
You certainly don’t have to be a “Professional” anything to be able to create something like this on proofgrade material. Had I made this on my own leather you’d be leaning towards the “professional user” more but that’s really only because you’d have to experiment with settings to get it right. What I’ve found though is the more you just suck it up and charge in head first with experimentation the faster and easier this becomes in the future (especially if you document your settings as you go and hang onto those notes for future reference).