Here's how I read it. It's a fabric that stretches, but you don't need to utilise the stretch element for your project, so size and pattern wise it sounds like you could treat it just like a non stretch fabric. In the dance world we need our seams to stretch and move and cling to the body so we always use a stitch which has movement, like a zig-zag. You don't, so a straight stitch sounds fine. Needle wise, you probably need to use a 'stretch' needle, (readily available). These have a ball point tip rather than a sharp point which slides easily through the non-woven lycra fabric. The sharps would not as easily penetrate the elastic in the lycra fabric, so the needle thread is not able to go through and pick up the bobbin thread, causing missed stitches. Just another thought. If you find the stretch fabric is unstable and sliding around when you are layering it with the other fabrics, you could try spraying with the 404 temporary glue to hold it. Coming from P&Q background I'm sure you are familiar with this. Good luck! Ann x