His guard could use a bit of improvement IMO. Hard to tell from the video but it looked like he was susceptible to a middle attack/uppercuts from a harder striker. Also, I'd like to see more head/upper body movement in that guarded position to take less direct punishment.
On the positive side his ringmanship was excellent, taking control of the center and keeping constant pressure/counter-striking when struck and moving forward/keeping his opponent moving back. His cardio looked to hold up well too. Not sure how many fights he's had but I've certainly seen a lot worse performances and he should be proud and keep working.