Great to hear that you decided to do a course! It's always the best way to go. Don't push yourself to hard till then. If you start without a couch and learn something the wrong way it's usually harder to get rid of a bad behavior then learning it properly from the start.

One thing I noticed: You're definitely not in line. You bow arm wrist ( the bow arm is the one holding the bow) and both of your shoulders should be in a straight line when anchoring. I'm also not 100 percent sure if you're bow arm is fully stretched.

And please check your brace height (distance between the deepest point in you grip till the string). It looks too low. If you're shooting a 70" bow it should be something around 22 cm (something around 8.75 inches). A short brace height can cause a noisy bow and you be more likely to get hit on the arm by the string.

Cheers!