It’s fun to play jokes with mirror images, things that aren’t actually possible, like in the following example.
The Belgian painter René Magritte (1898-1967) played a joke with a mirror image: a man looks at his own backside in the mirror. Magritte loved these kinds of surreal (dreamlike, illogical) situations.
I made a simplified variation on it, with a girl instead of a guy. The shelf with the toothbrush (a book in Magritte’s case) immediately makes it look like a mirror and not a window. The overlapping of the mirror and the board by the person in front of the mirror gives depth to the drawing.
EXTRA: draw a mirror image in which something is wrong. That can also be a detail in the mirror image that is slightly different, missing or added.