Flat-pack assembly: cam locks, torque discipline and the anti-tip rule
Furniture assembly looks unskilled until you have watched someone do it badly. The core skill is torque discipline: most flat-pack furniture is MDF or particleboard, and the cam-lock and confirmat fittings that hold it together strip the moment they are overtightened. A pro runs a drill-driver with the clutch set low for speed, then finishes every fitting by hand. The second skill is sequence, reading the exploded diagram once, sorting fittings into trays, and building sub-assemblies flat on the floor protected by the packaging cardboard rather than on bare tile.
The non-negotiable finish item is anti-tip anchoring. Wardrobes, bookcases and tall drawer units come with wall straps for a reason, and in a household with children they are not optional. On block walls this is a two-minute plug-and-screw; on gypsum it means finding a stud or using a toggle. A technician who leaves a two-metre wardrobe freestanding on tile, in a country where almost every floor is hard tile, has skipped the most important step of the job.