现代极简半调网点自然风海报

Generate a clear, bright, design-oriented image centered around any subject: the scene uses a large area of clean, light-colored, airy background to support the subject, the subject does not appear in a complete realistic form, but is translated into several huge halftone dot outlines, parts enter from the edges and are cropped, forming light overlapping, displacement, and tension from negative space; a finer linear structure passes through the main body from below or the side, like the skeleton, path, or growth line of the subject, carrying direction and order; then add a small-scale derived symbol of the subject as a visual pause, creating breath between the large shapes and small dots. Colors are extracted from the subject's own material, seasonal feel, cultural semantics, and emotions, maintaining the relationship between a large area of high-brightness background color, clear main color dots, small area of structural color, and light accent colors, overall bright and light, clean and airy, with clear but not overly heavy saturation, textures only present fine paper and regular halftone dots, without creating a sense of aged, smoky, or muddy feeling. The information layer adopts a restrained layout rhythm: the main title can be in a large font size close to the center of gravity of the negative space, with loose letter spacing, forming a calm hierarchical contrast between Chinese and Western text or main and secondary information; auxiliary information is scattered in corners or edges in extremely small font sizes, like dates, serial numbers, and markings on printed matter, enhancing the sense of precision without stealing from the main form. The overall effect should be like a piece of modern art print, reading the enlarged halftone subject outlines and fresh negative space first, then the fine line structures, small symbols, and textual order.

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Want to replace with: morning wild flower branches and a few thin petals, maintaining halftone negative space and the sense of fine line growth
Made as: a small poster for summer new arrivals at a nature-style store, can also be posted on social platforms
Small text requirements: add a date/serial number and a small insect symbol, not too much text
Aspect ratio: vertical 3:4