Keith, the real beauty of making your own Magic puzzles is that you don't have to give in to the tyranny of the original design. If you don't have a Master Magic right now, break down 2 original magics and string a blank one together. Then cut out 12 little squares of paper, number them from 1 to 12 in pen, put tape on the numbered sides and attach them to the puzzle in the order you'd like, taking great care to orient them all the same way, and to number the picture the same way as you attach the papers to the puzzle. Then flip and flop the puzzle until you've come up with "the solution", and then either number the pieces again or letter them. If you number them, make sure you use a pencil or a different colour ink so you can tell the front side from the back when you take the pieces off. Now you not only have a key to which piece goes where, but the proper orientation as well. Chances are you won't come up with the exact same solution as the official puzzle (the odds of doing so are about 1% or less), so if you plan to sell them on eBay, you can advertise it as having "a different solution from the commercial version, giving you a new and unique challenge". Good luck in your puzzle making endeavours.