Let's draw an ordinary day of the Character.
Rely on your text: in what setting the Character is, what objects surround them, in what mood the Character is, and who is nearby.
You can draw their favorite cafe, house, room, breakfast in the garden, office, a walk in the woods, sports routine, morning rituals, and so on.
Do not draw a full-fledged interior! It should be a sketch, you can draw an interior detail: a stack of books on a table, a cup, a window. The first thing that comes to mind when you think about your Character's environment.
When I introduced my raccoons to readers, I drew every raccoon in their own room, which is a good way to show the character's personality through the setting.
For inspiration, I've attached illustrations of the character's setting. But remember, this should not be a complete book illustration, just a light sketch based on your thoughts and ideas.