Build a clean product-focused Facebook ad around the Backpack, positioned upright against the Background. Use a slightly low three-quarter angle so the bag's shape, straps and compartments are easy to see, with generous negative space around it. Render the Sale Text exactly as written in large, confident uppercase lettering, placed beside or above the product without covering important details. Use the Color Palette consistently across the backpack, background treatment and typography. Combine bold sans-serif type with a simple sale-oriented layout, strong visual hierarchy and clear contrast for mobile viewing. Add subtle directional shadows and realistic contact shadows to anchor the backpack on the concrete surface. Keep the image contemporary and uncluttered, with accurate product proportions, crisp edges and no extra words, logos or decorative elements. Compose the final artwork in the Format.
Use these details:
Backpack: "black canvas backpack with tan leather straps and multiple zip pockets"
Background: "urban concrete wall and pavement with subtle surface texture"
Sale Text: "BACK TO SCHOOL"
Color Palette: "charcoal, warm tan, off-white and muted yellow"
Format: "1:1 square Facebook ad post"
AI models never repeat themselves exactly, so your result will differ from the one here. Change the details to make it yours.