1. Try to finish level 6 theory, it will really help us to communicate as musicians and build your understanding of the music you play.
2. Summer is a good time to explore music history. A good introduction for classical piano students is found on Audible.ca https://www.thegreatcourses.com/courses/the-23-greatest-solo-piano-works.html check www.audible.com I found it there for a really fair price.
3. YouTube score watching; paying attention to one element at a time: articulations , dynamics, tempo
4. General piano skills
You've got to learn your instrument. Then, you practice, practice, practice. And then, when you finally get up there on the bandstand, forget all that and just wail.
I'm a professional pianist and music educator in West Toronto Ontario. I'm also a devoted student and teacher of the drums.