Hi there, congratulations on your artwork. Is really stunning. Just wondering if you have some tutorials about building prompts or something... Keep up the good work.
Sometimes it depends on the model that I am using. Find all sorts of models at CivitAI.com. Usually, the models have example images with prompts included. Sometimes the simplest prompt will do: [type: photograph, painting, comic, etc.], [the subject], [describe the subject], [what is the subject doing], [what is going on in the background], [other attributes such as camera type, artist]
And you can put weights on how much importance a keyword has with a colon and anything from .01 to 1.8 (beyond that, things get crappy).
For example: A photograph of male model resembles (chris evans:.8), wearing a tank top, feeding pigeons, at central park in NYC, 8k, hdr, artstation Sometimes I have to swap things out. Like if I describe the person as being muscular before noting he is wearing a tank top, I get shirtless. So I have to move "tank top" earlier in the prompt or add more weight to it. And the secret to quality is start off 512x512, and check "hi-rez fix". I set that up to 1152x1152 and turn the CFG down to .4. And I'll run batches of 20 at a time or however I have enough patience for. And I'll get one or two great images to use. Then I upscale it 4 x its size. It looks detailed when you size it back down in Photoshop. Also, I use photoshop to doctor up any fixable atrocities such as extra nipples or fingers. And then run it through Camera RAW to adjust the shading and color.