I'm self-taught unfortunately, although I do have access to my child's piano teacher and have taken a few lessons. Have been practicing for about one and a half years. When playing "Allegro in F Major" (Haydn), I have difficulty playing notes for F4-A4-F5 without also playing E5... screenshots below for illustration
My R5 finger extends down to reach F5, but I haven't managed to arch the palm of my right hand enough to also avoid touching (and playing) the E5 key.
Any tips on how to improve my hand position to only play the three intended notes would be much appreciated... Do I just need to continue practicing finger stretches?