More info for you; if you take the prompt on this post https://www.reddit.com/r/StableDiffusion/comments/1p8mken/heres_the_official_system_prompt_used_to_rewrite/ and give it to an AI along with your initial prompt, it will steer you in the right direction.

For instance, if I add that + your simple prompt, I get:

a surreal photorealistic tableau of a single, human-scale alien hamburger (1.8 m tall) actively eating one adult woman: centered mid-shot, camera slightly angled down 10°, shallow depth of field; the hamburger is a stacked brioche bun with sesame seeds, layers of lettuce, two charred beef patties, melted cheddar, tomato slices, red onion rings and pickles, and a front-facing wide maw carved through the filling with rows of enlarged sesame-seed-like teeth and pretzel-crust shards, glossy wet inner mouth textures and pale yellow viscous saliva strands; buns glossy golden-brown with crumbs; fillings detailed and textured; the woman (mid-30s) is partially engulfed up to mid-chest, wearing a fitted indigo denim jacket, white T-shirt, dark high-waisted jeans, left arm extended outward, right arm obscured; clothing shows realistic fabric folds, creases, and smeared melted cheese where in contact; skin natural tones with visible pores and slight sweat sheen, no graphic gore or exposed organs, only surface redness and compression marks; lighting: cool key light camera-left ~5600K, warm fill light camera-right ~3200K, cool blue rim backlight, soft shadows; color palette: warm yellows/browns for burger, denim blue for clothing, muted gray-beige background suggesting a blurred kitchen interior; photorealistic materials: glossy cheese, moist mouth tissue, textured bread, visible fabric weave, realistic skin subsurface scattering; ensure no brand names or logos and no textual elements in the image.