Create a modern, eye-catching Facebook ad image for a digital product bundle with a bold, creative, money-making opportunity theme, featuring a big, clear, centered top headline text "6000+ T-Shirt Designs (PLR) Bundle" and a subheadline "Start Your Print-on-Demand Business Today" in a clean, high-contrast font, with a bright red or orange price badge sticker style "$10 ONLY" at the top corner, showcasing 6-9 high-quality 3D t-shirt mockups in a grid layout with a variety of trendy designs, including cartoon, streetwear, vintage, skull, typography, urban, and anime-inspired styles on white, black, and colorful shirts, against a dark gradient or modern abstract background with subtle glow or neon accents, highlighting selling points with icons or bullets, including 6000+ unique designs, PLR license, high-resolution files, and instant download, with a bold "Download Now" or "Get Instant Access" button, in a 1:1 aspect ratio, high 4K resolution, and a color palette of black, red, yellow, white, and neon accents.