Basic seams for making your own gear

	Simple seam:  The seam allowance is the distance between the stitching and the edge of the fabric.  This seam doesn't protect the raw edges from raveling, nor is it as strong as the felled and french seams.  It is easy to make, though, and works well for many applications.
	Felled seam step 1:  The lower fabric's seam allowance is twice that of the top fabric.  Lay down a line of stitching just like in the simple seam.
	Felled seam step 2:  Open up the fabric.  The longer seam allowance edge is going to be folded around the shorter one in the next step.
	Felled seam step 3:  You can see how the longer seam allowance folds around the shorter one (in green).  Lay down the second line of stitching close to the edge as shown in the diagram.  It should secure all three layers of the seam allowance to the bottom layer of fabric.  You may need to secure the folded layers to the bottom layer of fabric with pins, but keep them in the seam allowance.  You'll seam seal this area anyway so pin holes won't compromise waterproofness.
	Felled seam step 4:  This is what the felled seam looks like from the top.  You will see two lines of stitching.
	Felled seam step 5:  This is what the felled seam looks like from the bottom.  You will see one line of stitching.