Removable winter jacket liner

Step 2 Make a simple pattern

Flip your jacket inside out.  You're going to need a pattern for one of the front panels (picture 1) and for the back panel (picture 2).  This simplest way to do this is to get a piece of newspaper big enough to completely cover the area (I had to tape some pieces together) and pin it down to keep it in place.

Now it's up to you.  You can guesstimate the lines and cut away, you can feel for the seams and draw yourself a line to cut, or you can fold the newspaper to make a crease (picture 4) and cut along that.  Any way you choose, it doesn't have to be perfect.  Also, try to err on the larger side...you can always cut something smaller!

Label your front piece on both sides.  I cleverly choose the names "Side A" and "Side B".