I'm guessing by that they mean 2 things:

(1): Using decent level correct equipment (IE: Not crafting with naked or level 20 synthing gear at level 50 for level 50 crafts)
(2): Using crafting abilities that enhance quality. Since there will be no more "Touch-up"s involved anymore, you can try to max out quality before the end of the synth to max out HQ chance.