Congratulations, this is an excellent track and performance for all! Dear singer, you are a excellent and have a very distinct style that can market very well for your future. One learnt tip to share; it sounds like you have some tension in your outer/mid-lower back, and your spine slightly compressed from normal modern life and related tension/trauma, with some matching tension behind the neck/skull connection. It's normal and not dangerous but can constrain the voice. Give it a go to stretch your back & neck out, massage & relax the muscles in both place. If you have somewhere to stretch your back with your body weight holding onto a bar then try that out. Get a good massage if you can. Your voice and potential will grow even further! Respect J