This ceiling is a study of hard fast rules of axis, symmetry and repetition resulting in an expression of beauty. You can see the coffered ceiling and stepping of the drywall that will adorned with plaster moulding. The metal stud gives us a rigid ceiling that does not shrink as opposed to a wood framed ceiling. As I say to a sander keep going to make this surface as smooth as a new born’s skin. Truly it starts with the framer for levelness and from there it layers up. The rule is Do Not Do Your Work if not satisfied by the under laying work. Construction ethics, find your voice.