How to take a piece from good to excellent?

[kayleesom]

This year I am completing my Grade 8 Royal Conservatory of Music exam. I am also participating in my local festival with all 6 of my pieces. I have them fully "prepared" (memorization, dynamics, articulation) but I want to take them above and beyond the regular standard.

My repertoire:
List A: Fantasia in D Minor, TWV 33:2 - Georg Philipp Telemann
List B: Sonatina in A Major, op. 59, no. 1 Second Movement - Friedrich Kuhlau
List C: Waltz in A flat, op. 39 no. 15 - Johannes Brahms
List D: Jazz Exercise No. 2 - Oscar Peterson
Study/Etude 4: Dance of the Marionettes - Mario Tarenghi
Study/Etude 12: Jane's Song - Christopher Norton

If any of you are familiar with these pieces, I would love your thoughts on how to take them from good to excellent. Performance techniques, tempo, inflection, and anything else. I hope I did not offend anyone if I posted to the wrong board but I would really love a professional opinion.

Thank you


Edit: apologies, I should have posted this to the "Students Corner" and I don't know how to take this down. Sorry for the inconvenience.