You can use strength 0.6 - 1.0
The rest is up to you, just adjust accordingly.
If you have any questions, just comment.
recommend 1.0-0.8
u can use settings
KSampler:
eulr a
Schedule:
norml
CFG scale:
4 or 5
Guidance:
4 or 5
Clip skip:
2
Upscaler
R-ESRGAN_4x+ Anime6B, 4x_NMKD-Siax_200k, 4x-AnimeSharp, etc.
the rest is up to you. those are just the settings I often use
If you want the color to be brighter you can use base Illustrious or pony i think. just try