This style features a primarily pink, mulberry, and black color palette. The ornate embellishments are reminiscent of the victorian goth aesthetic. Images often have a watercolor paint texture.
Here are some complementary words you can add to your prompts. I put the effect I got in parentheses, but your result may vary depending on the model it's combined with.
watercolor (increases the texture, adds more colors)
alcohol ink (looks wetter and more colorful than watercolor)
painting or illustration (keeps it from turning into photos at lower weights)
gothic (more embellishments)
art nouveau (changes framing, adds decorative elements)
art deco (less organic than art nouveau)