Here's the method I found worked quite well:
- Intro (typical stuff, ie. title, author, date, audience, general tonal use etc)
- Para 1: Detail the construction of the piece (eg. are the paragraphs spaced out in a specific way with subtitles, the images, is a specific word in the title in bold text)
- Para 2, 3, 4....: Go through it chronologically whilst taking keen notice of the tone. The task is language analysis, not argument analysis, so splitting it up in terms of the tone shows you are being very explicit about what you are analysing.
- Conclusion: This really should be 2-3 sentences since long conclusions can often just sound like you are recycling some of the points already made. Just restate the target audience and pinpoint the major persuasive techniques used.
ON IMAGES:
As for analysing the images, you may choose to do them in the 1st paragraph, but linking them with a specific line in the text can be a smooth transition between your visual analysis and textual analysis. Take notice when reading through a new piece of whether the images really link with a line or is it a general introduction to the debate (eg. I found that in the 2011 exam that I couldn't really make a link with a specific line so I just put it in the construction paragraph).
Also, you've probably seen past exams, but if not, the pieces can be kinda big. So there is skill to be learnt in picking and choosing the important words or phrases to analyse.
I hope this gives you some help on the task.