my first Lora, which is based on Ariana Grande, takes me a few tries to make it work, and works best if use Hires fix. I gave it a few tries on it, and seems like only when the Hires kick in this Lora will look much alike. model is trained on 768*768 image so higher res works better. move your weight a little when you try on different models, realistic ones or not, some models with higher Lora weight will have high noise. 0.4-0.7 works well for me.