Oh, one can never call them-self a Chef, only others may do that
Specialties: MasterCook/RecipeFox; Culinary logistics; Personal Chef; Small restaurant owner; Caterer
In my opinion you can call yourself a chef when you hold that position. Otherwise you are a line cook, or "cook". I hate those people who call them chefs when they are line cooks and so on. But, this has been the widely debated topic of many. But if you are owning your own business and making things happen with no one telling you what to do, then rock on Chef.