Become a professional violinist ,the requirements are still very strict,some basic conditions are required:
You should love music and love the violin from your heart;
The finger condition is better,too short a little finger on the left hand or too fat a finger can affect long-term development；
Music accomplishment: the ability of the ear to distinguish pitch, good sense of rhythm, good sense of music, good coordination between hands, although these can be improved through training, then if their own conditions are good, learning will be more smooth.
Attend regular classes on time and practice the violin everyday is very important, just follow the teacher learn from easy to hard and everyday have enough time to practice, then will improve in shortest time.
Find a loving and patient and had experienses teacher to stady the violin.