Layers are one of the first things you learn in AutoCAD and one of the last things most people actually get disciplined about. A few habits make a real difference once drawings get complex. First, name layers by what they represent, not by color or line weight — something like MECH-DIM or CIVIL-GRADE reads far better six months later than a layer literally called "Layer 3". Second, keep a consistent naming convention across every drawing and template you produce, so anyone opening your file already knows where to look. Third, use layer states to save and restore common views instead of manually toggling visibility every time. Fourth, lock reference layers you are not actively editing — it prevents a huge share of accidental edits. And fifth, purge unused layers before you hand off or archive a drawing; a clean layer list is a strong signal the rest of the file is clean too. None of this is complicated, but it compounds. A drawing built with layer discipline from the start is dramatically easier to detail, revise, and hand off than one where layers were an afterthought.ers you are not actively editing — it prevents a huge share of accidental edits. And fifth, purge unused layers before you hand off or archive a drawing; a clean layer list is a strong signal the rest of the file is clean too. None of this is complicated, but it compounds. A drawing built with layer discipline from the start is dramatically easier to detail, revise, and hand off than one where layers were an afterthought.