Some things to keep in mind
-Face like sides together, with the inside of the jacket on the outside. This will keep your seams on the inside of the jacket.
-Line up the patterns with the grain of the fabric. This is not essential, but it will make for a nicer end product.
-Take notice to the inside and outside of the Ikea bag. It is different, even if it is hard to tell.
-Cut things together. This is also not essential, but it will save time.
-When taking apart the Ikea bags, use a stitch ripper. Do NOT cut them apart, you will not have enough room for the pattern pieces.