I think this is Step 4:
Lay out the strips in the order you want them to be. I put it on my bed and tried to make sure there weren't matching squares across from eachother. Of course I ended up sewing them out of order so I did get two squares the same across from eachother, luckily with the black between them it isn't that noticeable. (No, I was not about to rip out serger stitching to fix it.)
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Step 5: Serge quilt middle
For the first seam layer the pieces in this way- backing 1 face up, backing 2 face down, batting, strip 1 face up, strip 2 face down, batting.
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Serge it together on one side. Then open up the seam and check carefully that you've serged all the fabric, go back and if you have any holes.
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Continue adding the rows- backing fabric face up, quilt, new strip face down, batting
And that is where I am. The middle is serged together. Stay tuned for the next installment.