Start where the light is worst.

We print every new mark, walk it to the end of the street after dark and photograph it under a single sodium lamp. If the shape survives that, it survives a phone screen at midnight.

Contrast is a promise.

Thin lines and pale tints disappear in rain and reflection. We keep one heavy weight and one bright colour, and let everything else stay quiet.

Then check it by day.

A night brand still has to work on a paper cup at noon. The daytime version is the same idea with the lights switched off.