High-Res Realistic Mural Upgrade

I'm looking for an experienced image enhancement specialist to upgrade my AI-generated image to a very high resolution suitable for printing a wall-sized mural. The mural is for decoration purposes. Requirements:... (Budget: $250 - $750 CAD, Jobs: AI Image Editing, AI Image Generation, Digital Art, Graphic Design, Illustration, Illustrator, Image Processing, Image Upscaling, Photo Retouching, Photoshop)