Hi, I'd love to take on this project! I realise I don't have much of a reputation or portfolio on here yet, but I am a professional engineer with experience in CAD work, and also a long-time sewer who makes all sorts of functional things out of various materials. I therefore have a good understanding of how fabric handles and folds, and am also familiar with sewing pattern marks and conventions for indicating grain direction, for example. (I'm currently trying to bring these interests together in a new way, too - doing experiments at a local makerlab with laser-cutting fabric pieces for making neck ties.)
For this (and for your task if selected) I use DraftSight, an AutoCAD-style drawing program that produces detailed and accurate 2D drawings. I can therefore take your original hand drawings, convert them to CAD, and then provide both .dxf or other exchange format files for printing, and the original CAD files too. There is a free version of DraftSight available so you would be able to view and modify the original files yourself in future, if needed.
Looking forward to hearing from you,
Kathryn