>>18533391use
waifus.nemusona.com for the best results. you can generate decent art fairly quickly there.
in the positives, start off with describing your character: put emphasis on her name to give the ai a clear command that you want her generated specifically. then use as many tags as you can to describe her looks, to do this, look her up on danbooru and see how she's tagged. after some trial and error i've made this cynthia prompt:
(((cynthia \(pokemon\)))), pokemon, (((mature female))), blonde hair, long hair, (hair ornament), straight hair, hair down, wavy hair, ((hair over one eye)), grey eyes, (large breasts)
after you've generated her, you should come up with some negative tags of things that the ai generated and that are wrong. i've made this negative prompt:
((flat chest)), (small breasts), huge breasts, (((pointy ears))), (lusamine \(pokemon\))
what this does is make sure that the ai won't generate an inaccurate chest, give her elf ears or try to draw lusamine, who is also a milf from pokemon and has blonde hair, which may confuse the ai