Note that any of the leveling guides going over skill 350 were written pre-Wrath. You should stop following the guide at 350 and look for Wrath profession leveling guides at that point. The exception to this is Inscription.
GENERAL PROFESSION GUIDES
Filed under: Herbalism, Fishing, Mining, Skinning, Alchemy, Blacksmithing, Cooking, Engineering, Leatherworking, Tailoring, Enchanting, First Aid, How-tos, Jewelcrafting, Insider Trader (Professions), Inscription, Achievements