High-Res 50x70cm JPEG Artwork

I need the trout illustration shown at the Etsy link in a single, print-ready JPEG that will hold its detail at 50 × 70 cm. The file must be exported at a minimum of 300 dpi so it prints cleanly on a large-format printer, with colours matching the original artwork—no extra text, logos, or graphic elements.

Please handle any up-scaling or sharpening required to preserve clarity, embed the correct colour profile for professional printing, and supply the final JPEG in CMYK and a duplicate in RGB just in case my printer requests it.

Deliverable:
• One high-resolution JPEG of the artwork sized exactly 50 × 70 cm (300 dpi or higher), colour-balanced for print and ready for upload to the print house.