Five rules

Here are "FIVE RULES" that Dounis says in "The Violin Players' Daily Dozen Op.20".

FIVE GENERAL RULES

TO BE STRICTLY ADHERED TO

1. Cultivate at all times a feeling of absolute comfort while practicing.
2.  In practicing finger-exercises, watch your bow; in practicing bow-exercises observe a good position of the left hand.
3. Accent the weaker notes; make every note sound with a clear, full and round tone.
4. Remember always that in technic evenness is that which counts most.
5. Form the habit of listening to your playing with the utmost attention sharpen your hearing so as to detect the slightest disturbance in the flow of tone. 

FIVE LEFT HAND RULES

TO BE STRICTLY ADHERED TO

1. Keep the elbow well under the violin and the fingertips parallel to the strings.
2. Try to forget the existence of the thumb; never press it against the neck of the violin.
3. Do not strike the fingers upon the strings with too much force. It is wasting one's physical energy. Cultivate a very sudden and elastic spring-like finger action and keep every preceding finger on the string.
4. In shifting, pay due attention to the guiding finger which is the finger stopping the last note before shifting.
5. In a downward shift, remember that the thumb acts as a forerunner to the other fingers.

FIVE BOW RULES

TO BE STRICTLY ADHERED TO

1.  At all times cultivate freedom of movement.
2.  Bear in mind that the elasticity and flexibility of all joints of the arm and the fingers are as important as those of the wrist.
3.  Have and retain always a balanced hold of the bow; try to feel every stroke with your fingertips.
4.  Accent the up bow to equalize it with the down bow.
5.  Never forget to round off the crossing of strings and the change of bow.