I am 49 year old and I started to learn piano five years ago, got for two years and half to a music school aimed mainly at childrens, they also have painting school and the like. Got two piano teachers, the fist one quit because he got engaged to play in a group so started to gig everywhere and stopped to give lessons. A new teacher arrived but I didn't bond and I felt that I was going backward.
I then had to relocate so I stopped to practice. I restarted by myself to practice and this December I found another music school near my workplace, so I started to get some lessons.
The new teacher immediately noticed that especially my left hand has a lot of posture problem. A bit like in Daughter tends to raise index and middle finger whenever she plays the remaining fingers on piano : tend to raise the index finger and put the thumb outside the keyboard towards me when I try to play with 4th and 5th finger, especially the left hand. Also I tend to curl to much the fingers. The fact is unlike a 4 year old i have rather big hands, and with some keyboards index and middle finger I touch both the sides of the black keys when I play near the fallboard, with my digital Casio I feel like the finger is going stuck, also happened with a 1970s DDR made vertical a friend of mine has.
If I play really slowly and hands separate I can control more the behaviour, but when I start to go hand together playing unison all goes haywire especially if I go faster.
This problem of course is degenerating in missing the keys, playing the wrong notes and making all a mess.
Worse thing I can't see any solution to attack the problem.
How I can try to solve this problem?