First of all, thank you for making this amazing course! First, I have started by going through lots of generations to find the ideal mockup case. Below is the reference image:

As you can see, I even go through the Firefly model 5 just to use Enhanced prompting to apply to the Firefly model 3 without keeping the fast mode on. The first one on the left is the image that I then started working on.

And then implement it on the previous design I have on my pc, which is kind of Firefly supported.

And the final result is what is done on Photoshop

And the final result is below: