Get rid of your beginner sound is soon as possible
Learn to bow smoothly and create a beautiful tone on your violin
The problem with a lot of beginner violinists (but also sometimes with those who have been playing for years) is that they mainly bow with their arm.
One of the first things you learn on the violin is that your upper arm is almost still and that you mainly bow with your lower arm.
You shouldn’t copy other players, but you should have a flexible and relaxed bow hold that moves along with the straight movement of the bow.
Imagine that you have glue on your fingers and that the contact points on the bow stay the same, while your wrist and fingers can move along with the bow motion.
You can practice the bow motions with a pencil and when holding the bow at the balance point. The main motion you should practice is to be able to bend and stretch your fingers while maintaining a bow hold.