With respect to language analysis I think most students find it copasetic, immediately after writing time has commenced to go through with a pen, maybe even a highlighter, and mark the important sentences you are going to analyse, and what they are examples of.
Similarly with Text Response and the Context, it helps to annotate the prompt, by looking at what aspects you might be expected to address in it.
Remember to consider the fact that you can use your thesis statement in your introductory paragraph to restate the prompt to make it clear what your interpretation of the prompt is or to even put your own slant on it.
Some exam prompts, are kind of like traps, such as the following:
"Richard is totally evil, but the other characters in Richard III are not much better."
This is a trap because it is easy to simply start talking about how evil is a matter of degree, or to say that Richard is the only evil character in the play, which is egregious and outright erroneous. Better is to rephrase the prompt, like this:
"Evil permeates Richard the Third, and is epitomised in the character of Richard, who is embodies disordinate evil, however Shakespeare juxtaposes the deviant amorality of the actions of his characters, with the themes of conscience and guilt."
Some prompts have quotations in them. You must make sure to address what said quotation is saying about the prompt, but don't feel obliged to make it central to your overall thesis, especially if it really doesn't fit. Some prompts have two parts, where you must address both parts, not just one; such as:
'A memory is equal parts fact and self-deception' where it is important to address the 'fact' aspect of memory, not just self-deception. An easy mistake to make. Although it may depend to some extent, once again, on how you choose to restate the prompt in your thesis statement.
Outside of that it may also help to plan out what you are going to analyse in each of your body paragraphs.