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Neckties provide a source for a variety of embellishments, both for quilts and for clothing. Some possibilities: Use the tips as you would use prairie points; make yo-yos from silk neckties - they will stay fresh forever; flowers from silk ties shine and last forever; use the fabric for fusible appliques.
A quick way to prepare fabric for a jacket is to "quilt" it to muslin or well-washed flannel. Then cut out your jacket pieces - fronts and back at least, assemble, and line the jacket. You can do "whole cloth" or create patchwork. You will need a piece at least 30" x 70" or equivalent for most sizes (fronts and back only).