Our optional girls pay for their routines to be choreographed by choreographers (not our coaches) so aside from maybe changing specific skills - even as a coach I don't try to change the choreography and unless a parent was a choreographer I probably wouldn't want them to tell their kid to change their routine. Now, music is different - my mom knew absolutely NOTHING about gymnastics, but she always listened to music with me - so I let my girls pick their own music (a coach has to approve it) and if mom or dad wants to help out they are more than welcome too.