Fire Fan Wrist Movements?

Okay..So I'm obviously a beginner with Fire Fans, and I've been trying to learn how to do the Inward Mexican Wave. But the wrist movements are going to be the death of me. xP Any suggestions of what I could do to help me get the movement better?

Not an expert, or for that fact anything, with the fire fans. I know that poi is repetition and practice. I like to get the move going and learn it both ways so you can spend time on both sidea perfecting each position as you go back and fourth stretching and teaching yourself the right everything.