There won't be any example maps available for the puzzles. We try our best not to post spoilers. In terms of "how" to map, you may want to check out this thread:
http://revomaze.co.uk/phpBB3/viewtopic.php?f=7&t=891. The puzzles are blind mazes (as I'm sure you've already guessed). Each has AT LEAST the following components: A sleeve, core, drawbar, one fixed pin to hold the draw bar in place, and a spring loaded maze pin which is ~3mm wide. The latter is what you're navigating through the maze. Different puzzles may have additional components which add complexity. The space of play is slightly less than 1/2 of the core. You'll notice a dot to the right hand side of the sleeve. Once complete, this dot will (

) line up with a dot on the core. This dot, along with the engravings and hex ridges on the core are good references for you to map against.
The GM is probably not the best puzzle to start out with. Blue will teach you the basics and is a fun puzzle to knock out over a weekend. The GM requires skills learned in the blue and others to open.
Don't let your imagination get away from you, but be creative in your thinking. If you'd like, you can always send your map to a mod who has opened the GM (not me), but don't expect a lot of help.
Good luck!