Generate a comprehensive asset sheet on a pure white background, organized into seven distinct numbered sections with faint gray headers. The style is high-resolution digital watercolor and texture art.

Section 01 (Top Left): Four variations of pink cherry blossom branches labeled 'branch_01.png' through 'branch_04.png'. These should be delicate watercolor illustrations with dark brown stems and soft pink petals.

Section 02 (Top Right): A collection of approximately 30 loose cherry blossom petals scattered randomly, labeled 'petals_transparent PNG'. Include a few full flowers at the bottom right of this cluster.

Section 03 (Middle Left): Five square tiles of blue sky textures labeled 'sky_01.png' to 'sky_05.png'. These should feature white clouds against a blue background with varying degrees of halftone dot patterns or pixelated noise effects.

Section 04 (Middle Right): Twelve small square texture swatches arranged in two rows of six. Labels include 'dither_01-03', 'ink_red_01-02', 'ink_black_01-02', 'grunge_01-02', and 'grain_01-03'. Visuals should range from black/white dithering patterns to red ink splatters and beige paper grain.

Section 05 (Bottom Left): Four vertical rectangular strips of paper textures labeled 'paper_01.png' to 'paper_04.png'. Colors should be cream, light gray, dark charcoal, and off-white, showing fibrous details.

Section 06 (Bottom Center): Three images of shadows cast on a surface. One large square showing leafy branch shadows ('shadow_branch.png'), one smaller square of dense foliage shadow ('shadow_leaf_01.png'), and one thin vertical strip of linear shadow ('line_01.png').

Section 07 (Bottom Right): Six grayscale gradient masks labeled 'mask_diagonal.png', 'mask_soft_01.png', 'mask_soft_02.png', and 'gradient_fade.png'. These should show smooth transitions from black to white in various shapes (diagonal cuts, soft blobs, linear fades).

A prompt to generate a categorized grid of watercolor cherry blossoms, sky patterns, paper textures, and shadow overlays for design projects. 来源许可/权利说明：聚合仓库上游许可（请按各条目来源遵循）