Yes Sherry you can use the same fabric or a contrasting one.
Before you make your strips, take a piece of the cording and place inside wrap around the cord. Then you will need 1/2" for each side. Example, 1 1/4" around the cord plus 1/2", plus 1/2" to equal 2 1/4" wide bias strips.
When all strips are cut and seamed together place the cord in the center, using a zipper foot stitch the fabric together encasing the cord, go up snug as you can to the cord.
On the right side of one of the pillow tops, pin the cording matching rights sides together (the cord will be facing the inside or middle of the pillow), baste all around.
When you get to the place where the 2 ends of the cord meet (beginning and end) you kind of criss cross them. I'll post pic. You pull the cord out and cut off alittle on each end (just the cord not the fabric) and stitch down the fabric in a criss cross. The cord is too hard to sew through.
Place the other pillow top right sides together with the cord in the middle and stitch a 1/2" seam all around leaving an opening for turning and stuffing. (1/2" seams are generally used in home decor sewing.) You may have to grade the seam allowance before turning.
To grade: Trim each seam a different width. This helps with too much bulk in a seam.
Pics to follow