>>48547
Not exactly sure with WaiNSFW, but the base Illustrious model is trained without using "_" for tags, so adding _ reduces the efficiency of the tag and can even remove it entirely.
For styles you can prompt artists directly and you can of course prompt for stuff like watercolour and photorealistic. Different models can also have inherent biases towards certain styles if not prompted otherwise.
Also unfortunately anything below 768x768 will have reduced quality as the models have a base training of image resolutions 768 and above.I like to use 832x896 for example. (also I prefer DDPM as sampler and "Align Your Steps GITS" as scheduler, but most choices do well and it's really just RNG when one works really well with a certain prompt and seed and when it doesn't. Just avoid "DPM++ SDE", it has the best quality but the worst speed by far)
In many cases not having stuff in the negatives can be better than having a lot, or simply just using 1-3 things.
Example negatives to test:
1. [black:white] dress, clothes pile, close up
2. gym, white dress, tucked in shirt, frilled apron, bloomers, bow panties, suspenders, harness, inflatable toy, print, stickers
3. bedroom, bed, 3d model, hanging panties, diaper mattress, napkin, body pillow, pillow, lunchbox, (frame:1.4), toilet, square, rectangle
3,5. bedroom, 3d model, hanging panties
I wouldn't use "teenager" either, at best "teen" but if it isn't specifically loli/shota or mature/milf then just describe the body attributes you're looking for without mentioning age-range as it's not trained on those. You can then put unwanted body/age results in the negatives. Boobs too big? Put big breasts in negatives. Body too young? Put loli/toddler/shortstack in negatives, etc etc