my advice (based on the problems I had) is
1) use good thread
2) use good needles
C) don't skimp on seam allowance
I used whatever thread I could buy locally and it was way to wimpy for serious projects. I also used to sew close to the edge of the fabric to save fabric, but that leads to seam blowouts in a hurry, especially on lightly or non-coated fabrics.
cordura is actually one of the easier fabrics to learn on, not too much stretch and the coating keeps it from falling apart and helps the layers grip each other. whenever I try to help my wife sew something I wonder how anyone has the patience to sew all those thin, slippery, delicate lady-fabrics.