Hand-Drawn Packaging Proposal Board

Please generate a product introduction poster in the style of a hand-drawn packaging proposal board for [Product Name]. 

If I provide product images, please use them as your main reference, preserve the product's core appearance features, packaging shape, color, material, brand identity, and overall temperament, and prioritize using the main color tones and color matching relationships in the product images for design.
If I do not provide product images, please automatically generate the product's appearance and packaging design according to the product name that matches its positioning, and automatically match the product's attributes, category characteristics, and temperament with natural and reasonable main colors, auxiliary colors, and background colors.

Overall Poster Style Requirements:
This is not an ordinary e-commerce detail page or a simple studio poster, but a creative proposal board that combines "finished product images + packaging design sketches + brand concept development process." The overall presentation presents a highly aesthetic, highly refined brand design display image, as if a designer is presenting a packaging concept plan.

Graphics requirements:
- Vertical composition
- Use a unified and brand-like main color background, with the background color naturally determined by the product itself and not fixed to a single color
- Color matching should coordinate with the product's attributes: if there is a reference image, prioritize inheriting the main color and brand color of the reference image; If there is no reference image, a reasonable color scheme is automatically generated based on the product name
- Place the most complete and eye-catching main product visual in the center of the image, featuring realistic texture, three-dimensional light and shadow, and commercial product effects
- Multiple auxiliary visual elements are added around the product: packaging sketches from different angles, structural sketches, local styling exploration, handheld display drafts, packaging development ideas, and brand wording layout experiments
- Adding natural and casual black or dark hand-drawn line art, arrows, circles, symbols, and handwritten Chinese annotations gives the image a strong sense of "design process" and "creative proposal"
- The finished product should be relatively refined and realistic, while the sketch section should be more casual and lively, creating a contrast of "finished product + design sketch."
- The layout may appear relaxed and free, but the overall design should be orderly, rhythmic, and visually central to reflect a sense of high-end graphic design
- You can appropriately add small graphics, symbols, or fun elements related to the product to enhance brand memorability
- The final effect should have a sense of branding, creativity, process, and visual impact

Color Matching Principles:
- Do not fix the yellow background
- Automatically select the main color tone based on product type, material, purpose, consumer experience, and brand temperament
- Background color, product color, text color, and sketch line art color should be coordinated with each other
- You can use a highly saturated monochrome background or a soft, unified color background, as long as the overall look is brand and visually impactful
- Color should naturally serve the product, not overshadow the main product

Style Keywords:
Packaging design proposal board, brand concept development, hand-drawn sketches, design process awareness, moodboard, creative review draft, finished product rendering, visual experiments, commercial design posters

Please pay special attention:
- If there is a reference product image, prioritize following it and do not deviate from the product itself
- If there is no reference image, a reasonable product appearance, packaging, and color scheme is automatically generated based on the product name, maintaining a consistent overall style
- The focus of the visuals is "product introduction + creative design process demonstration"
- Don't make it into a regular e-commerce detail page, don't turn it into a promotional poster, don't overly rigid, don't lack sketches or handwritten comments, don't feel cheap, don't avoid a cartoonish look for young children