If an employee followed instructions this poorly I'd fire him.

Below is my prompt, which largely worked at ChatGPT, but I wanted to try Firefly since I've been an Adobe Photoshop user for many years.  I'm hoping that the terrible results are due to a difference in the rules of prompting for Firefly.  I'm seeking advice. Also, am I correct in understanding that no follow-ups to make corrects are allowed; instead I must try a different prompt to see how it is interpreted?

Prompt:

A photorealistic image of four cats standing upright on their hind legs, stacked vertically like a tower, against a clean white background. Tails should be visible and oriented as specified.

Cat Descriptions:

Bottom cat: Fully ginger (orange tabby) with no black fur. Standing on hind legs with feet on the floor. Tail curves up and to the left.

Second cat: All black, standing upright on the head of the ginger cat. Tail curves up and to the right.

Third cat: Tuxedo cat — white with a black back and head (no spots). Standing upright on the head of the black cat.

Top cat: Medium-sized gray tabby, standing upright on the tuxedo cat’s head, with one paw reaching upward.

Additional Rules:

All cats are upright and shown from the rear.

No distracting background; white only.

Second cat, third cat and top cat must stand squarely and only on the head of the cat below, not the back or shoulders.

The stack must be vertically aligned and clearly lit.

Maintain realistic scale and anatomy.