Just go to https://waifus.nemusona.com/
Insert your prompts
Click Generate button
Some tips: you can't generate an image if the waifu counter (left side of the button) is 50 or above. Wait until it get in 49 or less then click Generate as fast as you can to join the qeue.
Positive prompts: things you want your waifu to be like
Negative prompts: things you DON'T want your waifu to be like.
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Positive: masterpiece, detailed, high quality, best quality, silver hair, purple eyes, (flat chest), detailed dress, white dress
Negative: wings, bad quality, signature, dark skin, black woman, fat

Ah, I played around a bit (too much) with Stable Diffusion a couple of months back~ Here's my best of:

Image no longer available

Image no longer available

And, of course, lewd ones:

NSFW
NSFW
NSFW

    2 months later

    Waifu
    Here is what I got after a few attempts and adjustments to the prompts
    "black hair, shoulder-long hair, gray eyes, friendly, short, cuddly, soft" those were my prompts

      malmon how did you give character references to ai? Or does it know how Misaka looks like by itself?

          lokot0k Unfortunately, I didn't keep any of my originals, so I've lost the prompts used. I think the way I did it was to give it the name of the character with quite a high weighting (maybe around 1.5?), and reinforced it with specific features, such as hair colour, length, eye colour, expression, etc.

          This was a good few months ago now, so maybe the way you prompt models has changed a bit since.

              malmon understood. I tried thing like this with waifu.nemusona.com, but it's lacking of precise
              tag weighting, hecne characters on pictures were similar to these in prompts, but not exactly. I'll try Stable Difussion then ig 🤔

                  lokot0k I've not used that site before (link doesn't even work for me ^^'), but it seems odd that it wouldn't have weighting, unless it's based on something other than SD.