@aprilshin
Several of us finished up CED course, well some of us are still working on it (I include myself of course) if your interested in viewing and adding your work to the already created threads @Braden-Hallett created for us.
As to your lines, they remind me a bit like my own. I am very loose -good for sketches not necessarily for finished drawings that have solid strong lines. Well that's partly true -my lines are stronger in traditional formats vs. digital (tablet doesn't feel like paper).
*Muscle memory with lots of practise and ghosting (practise drawing above the paper with your whole arm and then put down your pencil and draw exactly it on the paper).
I would also recommend drawing different lengths as well as straight and curves. Not every shape is one continuous line.
π keep going π