Continuity takes more attention as a story grows.
A promising opening can still lead to uneven chapters. A character's voice may shift, a recent clue may disappear, or a scene may move on before its emotional consequence has landed.
Track who knows what, who owes whom, and which remarks remain unexplained. Keeping those facts in reference cards and writing memory reduces repeated searches through earlier drafts.
Give this chapter a visible change.
A chapter can turn on a decision, a revealed fact, a changed relationship or a new problem. Choose a change the reader can see.
Decide what the reader should see in this chapter.
Let characters speak, act and encounter conflict in a scene.
Keep confirmed changes available to later chapters.
Choose the characters, conflict and ending yourself. Review the draft and its proposed memory changes before accepting them.
Build a story you want to continue.
For a quick idea, try one short scene. For an ongoing series, organize the recurring characters, clues and chapter directions before continuing.