Break it down into individua clear steps:
Get out at station ..., leave by exit ..., when you come out turn right..., my house in the third street on the left...
Include buildings etc that will help them to orientate. Plan the exact route, draw it and then go through every stage. There's nothing much to say about the grammar- just use plain imperatives. If you are saying them, then say them slowly and pause, check understanding, go over them again to check, etc.
