Uh, ideas they present about the journey and the techniques they use to present those ideas perhaps. Wouldn't your teacher have told you a tad more info?
we're doing inner journeys, but I think its all much the same.
Basically you have to raise "issues" of the journey, we have to do one on the start of a journey, one on the process of journey and one on the result of journey.
So one of your issues might be "A physical journey requires you to overcome many obstacles to reach your destination", and then you talk about the techniques used to show that issue.