Nicest work on your flow of your lines of action, but those lines don't have the strongest flow yet. How would you like to kindly lighten up your lines of action by lowering the opacity to 40% by warming up to 30 minutes of 1 minute poses, using only your non-dominant hand?
As a result of this exercise, your lines and edges will become the least weakest but the most loosest, but free-est therefore expressive mostly. For most details, look into the PDF of the Walt Stanchfield book on Gesture Drawing for Animation. Good luck but let's hope these make sense to you.