Ok, Gabe..... These are the same video's you posted the other day. Sideways. Now that you have posted here in Critique Corner, you are susceptible to critisism, good bad or indifferent. Whichever way it's given, it's designed to HELP improve your playing technique's, not to be taken as rude remark's.

Now you have them posted in the right place. To start with, your right shoulder is all over the place. It need's to stay down by your side, not moving laterally, side to side and foreward the way it does. The only movement there should be is up and down, even at that, minimal movement up and down, for string change's, very little movement forward. That's the reason your shoulder get's tired and it's the reason your bow is hard to control. Tilt your violin to the right so it's on a slight angle.

Some people stand with their back to the wall keeping their right arm tight against the wall , but if you attempt it that way, you don't have good control / movement of your forearm. Here's a tip to help control the shoulder problem. Back to the wall, turn your body to a 45 degree angle to the right, keeping your shoulder and upper arm against the wall. That put's your upper arm tight to the wall and far enough foreward and still allow's you to raise it for changing string's. Don't move your arm from the wall more than 3/4". You have been bowing using your whole shoulder, upper arm and forearm and not bending at the elbow. Your bowing should be done with forearm and wrist. For the most part.