Clements Audley

left: model reference
light brown eyes

right: pose reference (he should hold his sword much lower to display the uniform)

Coat, Shoulder armor, helmet

left: I like Ulquiorra's silhouette for the coat.
A long coat but the front ends at the waist. It should be red.

Clements wears the fragment of a demon's skull as a helmet. Similar to the Arrancars.

right: the right and left shoulder armor meets at the chest to form a cross over the chest/torso.

His shoulder armor is also carved from demon bones, like his helmet

For the demon bone's that make up the shoulder armor/cross and helmet, I'm thinking gold.

Front panel pants

just a crisp clean look. Black or dark gray.