Looks good from here; the hem appears to be breaking right across the middle of the kneecap. The waist may be a bit low, but a lot of folks seem to prefer it that way. It only really presents a problem with a PC or when Highland dancing, when it can show quite a bit of shirt beneath the jacket. Otherwise it should be just fine with an Argyll like you have there. At 6'3" that's not a bad fit for an off-the-rack kilt.