Hey guys, just got my SAC back

I'm pretty happy - 39/40, but I actually lost a mark from using this ^ structure. My teacher gave me full marks but when it was cross marked the head of English didn't understand why I went straight into analysis in the first paragraph and thought it was just a really really long introduction with unecessary analysis
At risk of appearing a pedant I guess it's hardly worth disputing; after all it /is/ only one mark. And I fully realise for the SAC you're meant to go with your teacher's requirements no matter what. But I think I really tried to do this to the best of my abilities - I integrated all the feedback I got from my practice SAC, and this structure was fully endorsed by my teacher. If I had got alternate feedback though I would have done things differently.
I really shouldn't worry about it I suppose; I got a good mark and something petty like this is just another reflection of how damn subjective this subject is!