Leo Wong on (Edited )
I began to think about how close reading as a technique can be constructed on different levels, each independent but complementing one another, especially when writing about poetry.
There are a few rough categories, borrowing from Linguistics:
1. Phonemic–rhymes, alliterations, cacophony, harmony, etc.
2. Semantic—Thematic concern, semantic discord, etc.
3. Syntactic—word order, line breaks, organisations, working with enjambment and caesura, etc.
4. Pragmatic—the way of speaking, speech acts, pragmatic ambiguity, tone, etc.
Going further from language itself is narrative analysis, a term from psychotherapy, focusing on events and how one tells those events, through metaphors, etc.
Aesthetically, the more expansive and coherent your argument is between these different levels and with wider context (e.g. Intertextual connections), the stronger and more pleasant your essay will be.
Clarity, of course, is the most important element of your writing that contributes to your grade in A-levels and other formative assessments. Criticism by Hermione Lee never ceases to amaze me (see Lee's writing on Mrs Dalloway) in its well-purged balance of transparency and reach.