Glad you like the wrap. I got the idea on a forum, the Tele forum I think. I'm too lazy to do all the painting and got the idea to wrap it. And my wrap work is not perfect, trust me. Not like the car wrap people with zero visible seams or wrinkles. I'm getting better at it. Kind of embarrassed even posting this but here goes.
There are 3 x 5 samples on Amazon for like $1.50 each and free shipping. I just estimate the amount of samples I need, like 4 on this size box. Start by cleaning the entire outside with rubbing alcohol. The hardest part is the corners since they are curved. I'm getting better at it but I start by trying to cover the top with one 3 x 5 piece if possible. If it takes more than one piece on top like on this box, I put the [overlapping] seam where I can hide most of it, under the three adjustment pot knobs on this one. So when I measure the top piece I leave about 1/8 to 1/4 more on all sides. I stick the top down using the hinge method to get it lined up perfectly (look it up, too much to type here). I fold the left and right 1/8" to 1/4" sides over and stick them down to the sides. Then I make 4 little careful cuts on all 4 corners with a new Exacto blade. I fold the little corner flaps over for the left/right side. Fold the top and bottom 1/8" to 1/4" flaps/sides down and stick them, fold those little corner flaps over the left and right ones, and the top is done. That's the hardest part. Then I just cut rectangular pieces and stick them to the 4 sides using a little overlap with previously placed panels. I leave the bottom ends long so I can cut right up against the aluminum bottom edge with the Exacto. I use the Exacto to carve out all the holes. Done. You can use a hair dryer when you're done but not totally necessary. If you don't overlap you'd have to cut with extreme precision. I don't bother, the thing sits on the floor 6 feet from my eyes, it's not on display at a boutique effects show. It's not a good as a professional wrap job but I'm 100% happy with it and they get better every time I do one. $5 and 15 minutes. The final touch is the vinyl black letters for the text from smalllettering.com (not cheap, like $18 per stomp box). I wanted just the vinyl lettering to go over the wrap, not the bigger panel stickers that go over the entire pedal that you can print out.
If you look closely you can see tiny wrinkles and overlaps in the attached pics, but to me it looks much nicer than a bare aluminum box. This one says Korus Klone because my next one is called the Klon Klone. They will be sitting right next to each other, the same product line. lol..