Custom Page Layout Design

I need a layout (and any accompanying illustration) prepared for a custom-sized page. We’re working in centimetres rather than the usual A4 or Letter standards; I already have the exact height in mind and will confirm the matching width with you so the piece prints cleanly... (Budget: $250 - $750 USD, Jobs: Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Graphic Design, Illustration, Illustrator, Photoshop, Print Design)