Redwork - one or two layers of fabric?
I bought a Halloween quilt pattern that uses a lot of embroidery (think redwork in black). The instructions say I should use one layer of background and a layer of muslin and apparently embroider through both of these. What is the purpose for this? This is hand embroidered using a stem stitch and french knots and it isn't even on batiste. Is there some special reason why I should do this? I'm thinking of just skipping that 2nd layer, but maybe someone has some insight.