Large-Format Poster Design, icon creation

I have several existing images that must be scaled up or faithfully recreated so they print crisply at custom size (3 feet to 30 feet) for a wall installation. The overall concept is “Nature and Landscapes,” and I’ll share a mood-board that blends animals, lush plants and trees, flowing water, even a hint of rainbow-lit fantasy and light space-exploration motifs.

What I need from you:
• High-resolution artwork (minimum 300 dpi at final size) suitable for large-format printing.
• Assistance sourcing or illustrating matching icons or photo elements where originals don’t hold up at scale.
• Colour correction and compositing so every piece feels part of one visual story.

Preferred tools are Photoshop or Illustrator, but I’m open to Procreate or similar if it delivers print-ready files (CMYK, bleed included, layered PSD or AI). Final deliverables will be the print-ready files plus layered masters for any future tweaks.

If you’ve handled poster murals before and can keep fine detail sharp while respecting colour profiles, I’d love to see a quick sample or link to comparable large-format work.