I'll try to answer what I think the original post was asking...
To the homeowner your good if you are neat and organized. use drop cloths, clean up better than you found the place, use plastic or covers when possible. Anticipate how they will be using what they are asking for.
Also make sure your pipes are straight and neat, even if they will be covered by drywall. Those few days that your work is exposed will leave an impression that will last well after you gone.
breaker and label your circuits by room and appliance. I can't tell you how many customers that tell me their house wiring is all screwed up because too many lights go off with one breaker and then the rest of the breakers shut off recpts with no ryhme or reason (to them). Make it systematic and they will think their system is expertly engineered.
