Your ribbon should be cut no longer than 12″ to 18″. Tapestry needles has a blunt tip that makes it easy to work the stitch as the needle doesn’t pierce the spokes. Crewel or chenille needles can both be used. The ribbon should not bend or curl but should lie flat in the eye of the needle. You can do your ribbon embroidery on any fabric… that’s woven as long as the weave is not too open and loose.. even though the stitch may be incorrect there is no way Silk Ribbon Embroidery can look bad. The ribbons need to be flexible and flow easily as well as being easy to manipulate… and these are qualities provided by 100 percent silk ribbon.