Depending on if you're using Hardiplank or brick veneer on your home's cladding will determine the procedure you'll adopt to frame up eaves and gables. Your eaves are made from fibro cement sheeting called Hardiflex and will be supplied with the rest of your external cladding. The eaves and gables will need to be installed prior to the external cladding being fixed.
Note: Different procedure in eave construction is dependent on what kind of cladding you're using.