Work on fine-tuning the piece by doing the following: 

• Go through slowly and check the intonation of the piece. Look to see if you are using the right technique 
• Listen to the sound and try to make it beautiful through expression by adding your own artistry to the piece.
• Legato Bowing: focus on long, smooth bows Up Bow vs. Down Bow: pay attention to the bowing
• Play in front of a mirror to check bowing technique 
• Memorize the Music