Uploading some examples from the lesson. Just to show, it doesn't has to be done all pretty, just share your work is all. You can share one, two, or more, pages, join them together like I did, etc.

 

As for the questions:

• Which exercises helped you the most? They all have their merits, and are all useful in their own right. I find doing a few line exercises, followed by some circles, then maybe some gesture drawing really helps before moving onto a more detailed illustration!
• Did you notice any difference in how you approached drawing afterward? My doodles are lot more flowing and I use my tools in a lot more creative ways.
• Are you planning to keep this as part of your daily practice? I try to!