WOW your writing is really good 
is it just me but you mgs people structure your essays similarly... (i've been trying to copy but semi-failing haha)
must have good teachers there!
Structure goes something likes this
Intro
1. Establish the underlying issue, as well as the two opposing sides
2. Author + Publication Details + Contention + Intended Audience + Tone
3. Acknowledge image (if and only if it is significant enough, which it wasn't here)
4. Mention wider implication of topic (Didn't do it here since I already covered it in the first sentnece)
Body
~ Just do it chronologically, starting from the title. Make paragraph breaks whenever you feel your paragraph is getting too big. Focus on specific words and phrases and make up random spastic bs about the probable effect, just whatever comes to mind.
Conclusion
~ Summarize persuasive techniques
~ Summarize effects on different audiences
~ Finish with comment on the future scope of the issue