Still struggling to draw from the shoulder without my lines being all messy
I just posted a critique on your first request and saw this one, you're defintely improving! Drawing from the shoulder is hard at first, remember you can draw from your elbow too.
Drawing from your shoulder is a great habit to have, and will improve your drawing and quality of line tremendously. For gesture particulary it will help you produce smooth and flowing curve. Keep practicing and it will start to feel natural.