comments:
framing is too tight but I think you already explained that.
35mm frame which is 3:2 ratio is IMO not suited to portrait orientation. 4:3 is much better so bear that in mind with your framing when in portrait mode. The typical 8x10 frames which people use for photos on a shelf, matlepiece etc need approx one inch mount border so you end up with 8x6 image which is 4:3 that is one reason why you need to be thinking about it when taking images. You don't really need to rotate camera at all. Just take everything in landscape. ( or get a 6x4.5 camera )
Try and take images where the participants are reacting to one another rather than looking down the barrel of a lens unless you are deliberately making a head shot.
just my opnions for what its worth.