What is this page asking the reader to notice?
A subject is the territory around a piece. A story is a particular way through it. The editorial work begins when you choose what the reader should be able to see, understand or question after spending time with the page.
Choose a question that can carry the piece.
An early draft often contains several possible pieces. One paragraph introduces a problem, another describes a person or object, and a third offers a conclusion that belongs to a different question. Before smoothing the transitions, ask which question the material can actually support.
Write that question in plain language. It does not need to become the headline. Its job is to guide selection: which detail belongs, which source matters and which tempting digression needs a place elsewhere. A narrower question can give the page more substance because it makes room to examine something carefully.
Keep a source beside the statement it supports.
A source list at the end of a notebook helps you find the material. A working draft also needs a closer relationship between a statement and its support. Mark what was observed, what a source states and what you infer. The distinctions should remain understandable when the draft becomes fluent prose.
If the material does not settle a point, the sentence can say less. Leave the open question visible rather than borrowing certainty from the tone of the paragraph. An attractive phrase should not carry a factual load that the underlying material cannot bear.
Edit the promise made by the opening.
The first lines invite the reader into a particular piece. Later sections should fulfil that invitation or revise it deliberately. Read the opening beside the ending and ask whether they belong to the same argument, observation or question.
This is a different pass from polishing individual sentences. A paragraph can be clear on its own and still pull the page away from its purpose. Move, cut or reframe it according to the work it does for the reader, not only according to the effort it took to write.
A useful final draft leaves the reader with a supported insight and a fair sense of the limits. It does not need to close every question around the subject. It needs to make clear which part of the territory this page has explored.