Thank you for your insight! I am always happy to receive comments and feedback, I'm still on the early stages of my journey so I find them very helpful and encouraging.
Regarding the exercises with straight lines, I think I also put a lot more focus on getting them straight rather than controlling the start and the end. I'll try to keep it in mind because my line work is still sloppy and overshooting may be a bad habit that I'm falling into without even realizing.