I've made my first devlog video here :
It was an amazing experience!Very good video, nice explanation of the problems you faced.
What software did you use for sharing online drawings?
We used something similar in my team but more for designing flowcharts, https://miro.com
I use this for work (Software Engineer) as well and I like it a lot for brainstorming.
It’s also a good way of communicating your ideas for game mechanics to the other team members.