You need to say "debbie from summertime saga" in the prompt. Just debbie won't be good enough. You also need to add "drawn in the style of summertime saga"I photo shopped the face a cant seem to get it like this. But the body is damn good
You should add a better negative prompt also.
Pony Diffusion, the checkpoint on which this lora is trained on, has specific keywords. I don't know them all, but you can add "score_9, score_8" in the prompt to make more interesting images.