decorator
Pronunciation: /ˈdɛkəreɪtə/
noun
- a person who decorates, in particular:
- chiefly British a person whose job is to decorate the interior of buildings by painting the walls and hanging wallpaper: she became a painter and decorator
- chiefly North American a person whose job is to design the interior of houses by choosing colours, carpets, and furnishings.

Spelling help
Remember that decorator ends with -or.