I'm trying to figure out the best way to piece together a backing, how do you do it? I just ironed my fabric in half and cut it on that crease. I know I have more than several inches of overhang so I'm not worried about strict accuracy.
When piecing two pieces together do you pin first? Matching up middles, etc. Or do you just put two corners together and sew to to the end?
If you need only, say, 15 inches more width on one edge do you still piece two large pieces together so you have one seam down the middle or do you just add that little strip on one side?
I heard somewhere that a single seam down the middle makes your backing weaker. Not sure if that's true or an old wives tale.