One technique for maintaining a consistent style while varying the output image is by by using a reference image and a consistent prompt while adjusting the denoising strength level.
The lower the denoising strength is set to, the closer the output image will be to an exact copy of the original reference image.
Higher denoising strength leads to more variance and creativity from the AI image generation.
Generated images that are closer to the style you want can be swapped as the new reference image to get better results.
Higher Denoising Strength, other reference images, and prompt changes will lead to varied style results.
Simple detailed prompts and avoiding using complex reference images lead to the AI's best results.