Create a 4×4 contact sheet containing exactly 16 equal-sized image cells. The ca...

Create a 4×4 contact sheet containing exactly 16 equal-sized image cells. The canvas is exactly 16:9 aspect ratio at 2K resolution. Each cell must have identical dimensions and each cell must maintain a 16:9 aspect ratio. Place the 12 provided thumbnail concepts into the first 12 cells only. The remaining four cells must be completely blank and unused. Do not resize, enlarge, reposition, or rearrange any of the 12 thumbnails to fill the empty cells. Use a seamless edge-to-edge grid with no visible gutters, no outer margins, no borders, no frames, no captions, no labels, and no text. Every populated cell must be the same size as every other populated cell. The final four cells which are equal in size to the other cells contain a uniform dark gray empty placeholder tile with no imagery or text. Generate: 1. Book Cover Design Finished professional book cover artwork. 2. Novel Illustration Literary illustration. 3. Children's Book Art Whimsical story illustration. 4. Magazine Cover Editorial magazine artwork. 5. Comic Cover Comic book cover illustration. 6. Comic Page Layout Sequential comic panels. 7. Graphic Novel Page Detailed visual storytelling. 8. Album Cover Music artwork design. 9. Print Poster Print-ready poster artwork. 10. Editorial Illustration Magazine article illustration. 11. Calendar Design Calendar artwork layout. 12. Typography Art Creative graphic typography composition. These are thumbnail examples of creative workflows, not finished publication pages. Treat each cell as a small visual reference tile. Do not create a full-page layout, poster, book cover mockup, magazine spread, or presentation board. Do not enlarge any individual design element inside a tile. Each tile must have the same visual scale and framing as every other tile. The subject should be fully contained inside its own 16:9 thumbnail boundary.