Hi!
I'd encourage you to do the following:
1. Get your transcript and annotate for the following:
- Register (formal, informal, mix of both), Social purpose(s). Context (see below)
- Situational context - Field, Audience, Relationship between participants, including relative power and social distance, Mode, Setting
- Cultural context - Beliefs (shared beliefs between speaker and audience or interlocuters), Expectations (expected conventions around the text type), Language choices of society, Politeness (face needs), Taboo topics (e.g. death, wealth, social issues), Social values
2. Note the language features in your transcript that denote these aspects of context. Use metalanguage!!
3. Analysis. It would be an excellent idea to get your teacher to go through how to do this if they haven't already, but in a nutshell, based on what you've annotated:
- identity the language feature and give a language example from the transcript
- explain why the language feature is used (USE analytical verbs such as the one in caps in this sentence, but not too often

.
This is a great resource for more analytical verbs and how to use them.
- What is the effect? This is where you can link to context, including register and social purpose - why was the language feature used based on the context?
For example, if the text was an informal speech by a teen lifestyle YouTuber, I'd begin with an overarching statement relating to context (in an AC, this usually comes in your introduction):
Text 1, a speech titled,
X, by YouTuber shared with her online YouTube audience discusses [aspect of context - e.g. the taboo topic of the implications of social hierarchies amongst teenagers in schools].
Then entail into a further discussion of how the language features in the text support / reflect context.
An example of analysis could be:
The initialism, "OMG" (l. 7), used by YouTuber seeks to capture the language of the audience, predominantly teenage viewers, in order to decrease the social distance between them and YouTuber.
See if you can spot where I incorporated aspects of context and what they are.
I'm not too sure if this hit the nail on the head, but I hope it helps you out a bit

Edit: I didn't realise that writing l.8 with a bracket next to it in one of the examples I gave would give me

haha. I have changed it to 7 instead
