Have a 10 year old who plays Chopin, and has come to me with fallen knuckles/raised wrist and some fingers the first phalange also breaks. I have used the 'Cathedral' analogy to keep the knuckles raised, and a wrist parallel to the forearm, but the first phalange seems to be more an age related issue and that ossification of the bone structure is still developing. How do you deal with these things?