there are two ways i would tend to write my essays, both ways structured around the thesis statement i would mention in my introduction.
chronological - state the character’s development in a chronological manner, with one paragraph on how they appear in the beginning of the play, one on how they appear in the middle, and one on how they appear in the end. for example, if you do inspector calls, an essay on mrs birling might have the thesis statement of her being a foil to sheila and how this encompasses the theme of young vs old generation. i would write about how they are contrasted and compared at the start, middle and end. the middle of the text us usually the climax or the events leading up to the climax. similarly, i wrote an essay on gerald and how the upper class is resistant to change. describing his behaviour and obvious status which birling finds intimidating in the beginning of the play, how close he is to realising his mistakes and changing his behaviour in the middle of the play, and his return to his old, selfish behaviour at the end of the play. needless to say there’s plenty of analysis of the author’s methods in every paragraph.
thematic - for thematic essays i would have a thesis statement in my introduction that centres around a specific theme. i would then write 3-4 paragraphs on the topics, usually starting with my strongest. i will venture to say that you should try and make all your paragraphs equal in strength and not spend all your analysis in one, but i know it’s difficult. i did the merchant of venice for gcse but i know its relatively less common, so for my macbeth A-level I had the question regarding macbeth’s masculinity. i did one paragraph on his strength and the way he is described as ‘Bellona’s bridegroom.’ my next paragraph was on how he subverts the standard expectations of masculinity and my last paragraph was comparing him with lady macbeth. anyway, the point is that these essays would not be chronological and i would pull on quotes as and when i needed them, depending on where they appears in the book. as long as you make some reference to which act or chapter the quote is from, you should be fine.
once i made this distinction the quality of my essays dramatically improved!!! of course, the chronological essay structure is not limited to character questions, you can use the development of one or multiple characters to illustrate your points about a theme. also, thesis statements!!!! so so so so important, they will literally bring your essay up a grade. when planning an essay, think of one sentence that describes the overall point and mention it in the introduction. imagine your thesis statement like a long thread running throughout your argument, woven through each of your paragraphs. you should show how your evidence proves your thesis statement rather than just the question. return to your thesis statement in the conclusion and summarise your work / put any cool context or quotes that summarise the situation.
i hope this helps slightly!!! good luck for your gcses <3