I had no idea it was comparative, i just analysed the two pieces like you normally would, I don't believe I have even been taught how to do a comparative in class before. Am i going to die?
A MESSAGE ON THE "COMPARATIVE":
So, totally good reason to be a bit unclear on what the hell just happened. People will call it a comparative piece because, one way to integrate both of the language forms into your essay would be to compare them. However, that is not the task. The task is to analyse ways in which written and visual language is used to persuade a target audience. Nowhere in the criteria does it say "compared two things". So if you didn't compare, then you're fine; however, if you didn't mention the second bit at all, that may dent your marks ever so slightly. If you did compare, that's fine too. Point of story is: your marks are still subject to the same things they've been subject to all year - how well did you analyse language?