cool idea! like some others said, it's simple yet fun, and there's a nice play of difficulty there with being good making it harder
though I have to agree you do get some periods of downtime where you can't really do much about your situation. perhaps it could be a good idea to randomly switch the player every now and then (with a good telegraph, of course), just so you get a new objective
being your first game, you have something really good on your hands! keep it up