How to use when drawing illustrations
Brainstorm Notebook 005's "margins" are the best. Brainstorm Notebook 005, where you can consider illustrations while creating margins, is the best idea experience ever. 005 is recommended for drawing icons and logos freely.
Brainstorm Notebook 004 is recommended if you want to put out a lot without the need for blank space. If in doubt, 004 is fine. The size of the squares is slightly smaller than the sticky notes used for idea generation.
Brainstorm Notebook 001 is recommended for illustrations that should be considered small, such as smartphone app icons.