Begin to install weatherboard

We begin to install weatherboard last week.Steps:

1.Find out "datum".The datum is the weatherboard directly above doors and windows. This
weatherboard have a gap with head flashing 5 mm.
2.Transfer the datum level to building corners.
3.String line cavity batten at bottom.Make cavity batten the same level.
4.Measure and mark storey rod
5.Mark every one of weatherboard level on cavity batten,using storey rod.
6.Install the "datum" weatherboard first(above windows and doors).
7.Install the bottom weatherboard,then building up.