From a fellow greenbeard, welcome! There are plenty of beard sages here and while I'm not one of them, I'd say that's pretty healthy 3-week growth. Cheeks will fill in with some time. The fellas here have this "13 week" mantra for a trial period, but from the looks of it I doubt you'll require that much time...then again, I'm a bit of a facial hair novice. I do agree the neckline could be a little lower, but that's nitpicking from a know-nothing.