Now you have a list of possible game elements in hand. It's time to take a large sheet of paper and begin to sketch out a game board. Grab some small tokens, coins, or whatever's handy and put them to work as game pieces. Play with possibilities until the design of your game begins to gel.
At this point in the process, keep asking yourself what kinds of thinking the players will be doing as they play. Are they focused on gamestuff or will your game engage them in processing what they know and don't quite fully know about the content? Does winning the game require learning the content better than the other players? If not... you've got more work to do.