T-Shirt Graphic recreation ASAP

I have a screenshot of an illustration graphic that ChatGPT generated for me, but it needs to look crisp and professional before I send it off to the printer. The goal is a print-ready file at 300 DPI, large enough for a full-front tee. Will need to be recreated by someone will illustration skills

Here’s what I’m after:

• Polish the colours so they pop on fabric.
• Smooth any jagged or uneven edges—no pixelation or fuzzy lines once scaled.
• Add subtle details wherever the AI left gaps, while keeping the original concept intact.
• Supply the final artwork in high-resolution PNG (transparent background) and, if possible, a print-ready PDF or flattened TIFF.

Turnaround is urgent, so please let me know how quickly you can jump on this and deliver the upgraded files.