Which piece will show off my violin skills better?

To showcase your violin skills effectively, consider performing a piece that highlights your technical abilities and musicality. Works like Vivaldi's "Winter" from The Four Seasons or Mendelssohn's Violin Concerto in E Minor are Excellent choices, as they feature intricate passages and emotional depth. Alternatively, a contemporary piece like "Czardas" by Vittorio Monti can demonstrate both technical prowess and expressive playing. Ultimately, choose a piece that you feel comfortable with and passionate about, as your connection to the music will shine through.