I am mixing one design and two images in Freepik, but it doesn't work exactly the same in Adobe. The sample image can provide inspiration, and by taking the color from the other image and blending them, a beautiful result can emerge.
I am a bit confused as to what you are asking. Could you clarify please?
What I understand though.. 1) Take the image that you want as a composition reference and place that image in composition reference in FireFly. 2) The image that is a style reference place in the style reference box in Firefly. 3) Move the sliders around to get an imaage that you like.