Way of working: very ornate, disregarding one old leather (7)
I believe the answer is:
Here is my best explanation:
'leather' is the definition.
(morocco is a kind of leather)
I don't understand the remainder of the clue.
(Other definitions for morocco that I've seen before include "in which literature may be bound to sell", "state of Africa", "Soft leather used for in book binding", "N. African country", "North African country - leather", "Country in North Africa", "Hide", "Soft fine goatskin leather", "Casablanca's country" and "Country of fine leather".)