My DD, 16 year old sophomore in high school is currently an Xcel platinum. She's currently training 12 hours a week at a not so serious gym, and she's been wanting to get more serious for a few years but we haven't made the switch. We called a gym to ask about switching but she has a lot of...
She has pretty good form throughout the routine, and bent arms is something I struggle with as well, but I recommend trying to extend more on the glide and not piking her hips over the bar as she's shifting. Maybe try being a bit more patient. Hope that helps!