Start out by cutting squares or rectangles out of fabric. Make them all the same size. Lay them out in the order you want them. I used red, orange, and natural berlap, mustard yellow felt, brown fabric with tiny white polka dots, an orange patterned fabric from Beverly's that I had laying around, and... my favorites: the fall trees and apples from The Ribbon Retreat! they've got some great fabric and it shipped the next day!
The next step, (not pictured) is to sew the short sides of the recangles together. Basically when I laid out all of my pieces, I just flipped them on top of the one I paired it next to and stitched along the one edge. After each set, I would replace it where I picked it up from and do the next one. Next, I flipped one set onto the the next set, right sides facing. Pin and stitch along the long side of the rectangle, where you pinned.
Here it is, all pieces stitched together.
I folded it from end to end and trimmed the edges to make them even.
For my backing, I used a plain brown that I had in my fabric stash. Face right sides together, and trim excess backing fabric.
Pin all around the edges. I put a few down the middle too, just so it wouldn't be tempted to move on me.
Sew along all edges except one of the short edges. Turn inside out and press with a hot iron. Turn in the edges of the one short open end, and press.
This was the end I used to flip it right side out. After you stitch it closed, continue top-stitching around the entire runner.