Use any negative textual inversion (e.g. EasyNegative), they will help you a lot.
Recommended samplers are "Euler a and DPM++ SDE Karras" for AingDiffusion v7.1 and up.
Hi-res fix is a must if you want to generate high-quality and high-resolution images. For the upscaler, I highly recommend 4x-UltraMix Balanced or 4x-AnimeSharp.
Set Clip skip to 2, ENSD (eta noise seed delta) to 31337 [to replicate image] and eta (noise multiplier) for ancestral samplers to 0.667.
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