08 Name an object, not an adjective

What people usually ask

Make a clean, modern graphical abstract for my paper on catalyst deactivation.

What comes back

A reasonable generic layout, different each time, with stock icons.

Ask this instead

Make a graphical abstract for my paper on catalyst deactivation.
One panel, 1600 px wide. In the centre, a horizontal tube
reactor drawn as a plain cylinder. Three labelled arrows into
it on the left: <feed>, <steam>, <inert>. One arrow out on the
right: <product>. At the right edge, a small plot with one
declining curve, x axis "time on stream", y axis "conversion".
All text 24 pt or larger. No icons, no gradients.
The attached example is a layout template only: keep its
placement of the parts, but the colours must differ from it.

Attach: one example to copy the layout from, with what must differ stated in the prompt.

Why it works: a named object with a count and a size can be checked against the picture, and an adjective cannot.