Hi Marlon! Dianne’s suggestions very good ones. You are off to a good start! I would recommend trying to keep the fingers on your bow more curved, especially your pinkey. If your pinkey stays curved, you will begin to have more control over your bow strokes. It also looks like your pointer finger is wrapping around the bow a little too much. Check out Mr. Perlman’s bow grip here.
Michael who created this website also has a great exercise for strengthening your pinkey finger.
Let me know if you have any questions! If you would like more one on one coaching you can find me here.