I have been using the SDXL Prompt Styler for a while now. It will prepend and append prompts to the current prompt.
The base prompt used:
Positive prompt:A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe,
Negative prompt:
monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
In this example, the positive prompt had "texture" prepended, and "top down close-up" appended to the end. While the negative prompt had "ugly, deformed, noisy, blurry," appended.
Depending on a the style, quite a bit may be prepended and appended. 
Style: sai-comic book
Positive prompt: comic A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, . graphic illustration, comic art, graphic novel art, vibrant, highly detailed
Negative prompt: photograph, deformed, glitch, noisy, realistic, stock photo, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
Style: sai-3d-model
Positive prompt: professional 3d model A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, . octane render, highly detailed, volumetric, dramatic lighting
Negative prompt: ugly, deformed, noisy, low poly, blurry, painting, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
Style: sai-clay craft
Positive prompt: play-doh style A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, . sculpture, clay art, centered composition, Claymation
Negative prompt: sloppy, messy, grainy, highly detailed, ultra textured, photo, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
Style: sai-origami
prompt: origami style A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, . paper art, pleated paper, folded, origami art, pleats, cut and fold, centered composition
Negative prompt: noisy, sloppy, messy, grainy, highly detailed, ultra textured, photo, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
Style: sai-cinematic
Positive prompt: cinematic film still A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, . shallow depth of field, vignette, highly detailed, high budget, bokeh, cinemascope, moody, epic, gorgeous, film grain, grainy
Negative prompt: anime, cartoon, graphic, text, painting, crayon, graphite, abstract, glitch, deformed, mutated, ugly, disfigured, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,
Style: sai-texture
Positive prompt: texture A smiling, alien turtle wearing a translucent stillsuit is shown in the midst of mountain path near a waterfall, from above, its chest is wide and imposing revealing its non-human form, volumetric water vapors swirls around it as if caught by an unseen wind, background features a lush forest and dark sky, detailed, realistic, 8k uhd, high quality, style of James Stokoe, top down close-up
Negative prompt: ugly, deformed, noisy, blurry, monochrome, watermark, signature, label, ugly, deformed head shape, deformed, disfigured, noisy, blurry, low contrast,