Sure, Patrick, we could do that if you wanted to. I would be happy to help someone else learn to make a blade.
As for making a cutlass from a modern machete...sure, I think it could be done. But you would need to cut or grind down the grip to make a suitably shaped tang, and add a bone, antler, or wood grip, coupled with a guard similar to either Patrick's or mine, or some other historical shape.
I believe Master March of the Archangel crew has made some extremely nice cutlasses from scrap steel. They are very much like the cutlass from DeadMen TellNoTales.com You could make the guard like Patrick describes and add it to your machete, and come up with something pretty neat, as well as functional.