Nice recordings, Mike and James!
Lovely to hear such round and full notes, particularly in the first 3 pieces. I think that La Cucaracha has such a catchy tune that there is a tendency to get carried away with the speed and clip a couple of notes in the process. Very hard to resist, I'm sure, and it still sounds good
I've got a feeling of going backwards at the moment - I found some excellent videos on RH technique, which I was trying to follow... but then read a whole discussion about bent vs. straight wrist, and am now not so sure where anything should be. I might just record some options and put them out for a vote