Now you need to cut 1/3rd off your longer piece of fabric. This doesn't have to "exact." I just folded my piece in thirds and cut off the top third once I knew approximately where that was.
Now you have your three pieces to work with - your original piece (18 x 18), and your second piece, now cut into 1/3rd and 2/3rd of its original length. Mark the "cut" sides with a pin and then set up your ironing board, you are gonna need it for this next step!
Now you need to make a hemmed seam on each of the cut sides of the longer piece of fabric - the 1/3rd and 2/3rds pieces. If you have a seam gauge it will help with this step. I did this right on my ironing board since I ironed the seams as I went. First, measure and iron down 1/4 inch on the first cut side.
Now measure and fold down 1 1/2 inches on the same side.
Press it down well.
Pin the hem in place. Now create the same hem (1/4 and then 1 1/2 inches with the second piece of the cut fabric (remember, the 1/3rd and the 2/3rd pieces you cut from the longer piece of fabric?).
Topstitch the hem in place on both pieces.
This is going to create beautiful pocket openings on the back of your pillow cover. Making the double hem helps to prevent fraying, and really, it just looks much nicer. It doesn't take long and after you do one you will fly through the second.
I used a bright red thread to contrast with my vibrant fabric choice.
Now pin your pieces right sides together. Your hemmed cut pieces will overlap. First lay your 18 x 18 piece of fabric down, right side up. Then lay your shorter (1/3rd) piece first on top, lining up on edge. Then lay your second (2/3rds) piece over it and pin in place. It will be a tad bulky where the hems overlap, that is okay. We will re-enforce those areas when we sew them together.
Sew the right sides together, using a 5/8 inch seam allowance. Do not worry about leaving an opening, because you have the pocket opening on the back that you will use to pull right side out.
Re-enforce the sides where the hemmed areas overlap.
Clip the corners.
I did a zig-zag stitch down all the edges to prevent fraying. If you have a serger, you are lucky. If you don't, this works well. It doesn't have to be perfect.
Turn right side out using the pocket opening and press. I used a chopstick to get the corners all pushed out. Can you see that nice pocket opening? I didn't get a good picture of it up close. It looks very finished and professional. Place your pillow insert inside the cover and make another one, or two, or three. Marvel at your beautiful new pillows.
These just look so much better than the drab beige pillows I had before. And it really wasn't that hard to do, was it? I love easy, quick sewing projects.
Now that I have mastered the pillow cover, I just might make new covers every season. The best part is that these covers cost less than $3 each, they come off and on easily, and you can wash them if they get loved on by little rugrats.
Finished pictures of pillows taken by Travis.