After I got everything else down, I thought of what could happen between my, for example, inciting event and first plot point (thatās where Iām writing in my novel now). You can think of your sub genres and how those come into play. Since you have a murder mystery, you can add how Joseph interacts with people in town (or whatever the setting). What setbacks does he have tracking down the murderer. Are there any red herrings?
You mention Sampson being murdered and heās close to Joseph. Explore their relationship more and what leads him to be murdered. Little things along the way that make your story as cohesive as possible the subplots donāt have to be every x chapters, though. Also, the stakes for Joseph not finding the murderer, which Iām assuming will be someone else close to him dying. You can also look into mystery conventions and that can help you come up with subplots
Sorry I didnāt mean to write that much