Lora trained using Jakub Różalski's artwork : https://www.artstation.com/jakubrozalski

No trigger word, if you want to force the effect more you can use "a digital painting" or "digital illustration" in your prompt. In most of these previews I started my prompts by :

a digital painting rendered in a dark, gritty, and surreal style,

Because of his style this will tend to give you a character looking from the back and a some large entity in front of them.

Trained using around 80 images at 4K resolution.

Issues :

• it's hard to get a background without any characters

• signature is visible