Member-only story
The following article comes from Potter
Reminder: There are many related tools in the software shared below. I only share the software that I think is better, and other similar software will not be listed.
Drawing
XMind
If you can’t think of a thing or want to brainstorm, let xmind help you organize your thoughts

Diagrams.net
This is free drawing software that can draw all kinds of graphics you need. He often helps me sort out my thoughts and processes

Colour Assortment
After talking about drawing, you will definitely encounter that the drawn pictures are not beautiful, so I recommend a few color matching websites for you to solve the color problem
Coolors
Quick and random generation of matching colors