A smooth wall changes how a room feels. In this step-by-step field manual, you learn the exact sequence to patch drywall so repairs vanish in daylight and under raking light at night. Chapter 1 covers small defects—nail pops, tiny picture-hook holes, shallow dents—and shows how to bevel, fill thin, and feather with a four- and six-inch knife for fast, clean results. Chapter 2 scales you up to mid-size damage: square cutouts, backing strips, matched board thickness, paper or mesh tape, and controlled multi-coat compound work with sane dry-time discipline. Chapter 3 finishes the job the right way: primer selection, light texture match (orange peel, knockdown), sheen alignment, edge feathering, and blend strategy so you avoid flashing and lap marks. You get palm, light, and straightedge tests; common failure patterns with quick fixes; and a simple prevention plan so you do not patch the same spot twice. Clear language. No fluff. Safe, code-aware guidance you can trust.