Congrats on your ribbons!
You guys look really nice out there. I would suggest getting your horse to track up a bit more, really get her moving into that bit.
In a few of the pics her head has come up above the vertical and she's leaning into your hands and being heavy on her fore. Bump her with your inside leg (it looks as though you already are) and get her off that inside rein. She should not be leaning so heavily into it.
Lots of strong half halts should help, and just remember to be soft with your hands when she's soft in the face. Also keep that outside rein steady so that when you do get her off the inside she will have the outside to balance on.
You have nice equitation! Relax through your hips. You look stiff in that area, which directly is linked to stiffness in your horse. Be soft and invite him to pick his back up to your following seat. Take lots of deep breaths! Beat those show nerves!