3D / CAD needed for sculptural leather bag

Description

I'm creating a sculptural leather bag and am looking for a 3D / CAD designer who can help visualise it and supply the dimensions needed to create the component pieces in real life.
The bag is comprised of 4 separate pieces; the primary challenge is that the main body of the bag is created by a single strip of fabric folded and twisted around on itself to create a 3D figure-of-eight / infinty loop, with the gaps in the shape being filled by 3 other pieces.
It's a bit difficult to do this kind of 3D sculptural trialling using physical materials, so I'm looking for someone who can create the ideal shape in software then provide the measurements for each of the component pieces as they would be laid out flat.