Split A3 Embroidery Vector Outline

I need a clean vector outline of an existing embroidery design that I will supply as a reference image. The photo I have - the resolution is not perfect but it works. Accuracy is critical: We used AI to recreate this but the neckline was not accurate and additional leaves were included that were not in the original design. The finished outline must remain perfectly to scale (15 inches x 16 inches), with the left half of the design laid out on one A3 artboard and the right half on a second A3 artboard, so that when the two sheets are placed side-by-side they form the complete design at full size.

Please rebuild every curve and detail so it can be traced by our embroidery artisans for hand embroidery work. Final file in PDF export for easy viewing would also be helpful.

P.S. We could share with you the vector file we have and you can edit it so it is more accurate?

Acceptance criteria
• Full-size vector outline, no pixel artefacts
• Two separate A3 artboards (left and right) that align seamlessly ( 2 page pdf)
• File delivered PDF

We need it today.
I will also attach the files done by Chatgpt for reference.