Firefly text generator not following reference

I'm trying to use Firefly to generate an image that combines two specific references:

1. A text prompt that defines the shape (e.g., "EGG" or "EGG STUDIO")

2. An image reference for the texture (a fried egg, with yolk and egg white)

The problem is that Firefly completely fails to combine the two. I’ve tried prompts like:"fried egg yolk, egg white background","fried egg yolk typography on egg white background","typography made of fried egg yolk and egg white"

I’ve tweaked every possible parameter, and even simplified the prompt (e.g., changing "egg studio" to just "egg"), but the result is nowhere near what I’m aiming for.
The output either ignores the text structure or fails to capture the fried egg texture at all.

Are there any known workarounds for this kind of problem? Thanks