Most sales happen before chapter one
Here's a hard truth I wish someone had grabbed me by the shoulders and told me years ago. Most sales are won or lost before a reader ever reaches Chapter One. Your cover, title, series name, and blurb are doing the selling while you sleep. Quick exercise: open Amazon, pull up the Top 100 in your category, and just look. What colors repeat? What mood? What promise do those covers make in half a second? That pattern is your reader telling you exactly what they want. Drop your genre in the comments plus one thing you notice the top covers all have in common. Let's crowdsource the patterns.