Here is a short video on how to prepare your pattern pieces.
For all SCD pattern, there is a Pattern Pieces Overview page (either in Pattern Pieces or Instructions File). My apologies for leaving it out for the SnapN'Go Duffle and Xpandable SnapN'Go Tote Bag. It has since been updated and you should be able to access it from your account over at SCD website. Email notifications were sent earlier today.
Do check out using laminator to laminate your pattern pieces for ease of storage and pattern tracing. Link in the YouTube description.