1) Beautician 2) Beautifier 3) Christmas tree decorator 4) Embellisher 5) One ornamenting 6) One who decks the halls 7) One who decorates 8) One who might deck you 9) Ornament handler 10) Sewer of sequins 11) Tinsel 12) Tinsel user 13) Tree trimmer 
• (n.) He who, or that which, adorns; a beautifier.
A·dorn'er noun He who, or that which, adorns; a beautifier.