Silk and drop cloth had a conversation and this is what they came up with
Measure your pillow form and cut drop cloth. For instance, if your pillow is 12 X 16 cut one piece this size. Then, since we are making an envelope pillow the back is going to be two pieces. Cut 2 pieces that together will be about 3 to 4 inches longer so they will over lap. If your pillow form is 12 X 16 then your 2 pieces will be 8 X 16. So together when those 2 pieces over lap you will have 4 extra inches of fabric to make the envelope.
Take the one large piece and sew the two smaller pieces on each side.
Fold over the ends of the sides and stitch to finish the ends.
Measure how tall the pillow will be and cut a piece of silk twice this length. As far as the width, my ruffle is around 6 inches wide so I cut a piece of fabric 12 inches wide so I could fold it over and it would be self-lined. You don't have to do this. Since the pillow form is 12 X 16 I cut my ruffle 24 X 12. But you could cut yours 24 X 6. I don't like to finish the ends on ruffles so I fold mine over and they are self -lined. You will need to finish the top and bottom of the ruffle. I just folded and tucked mine inside and top-stitched it closed.
Sew the ruffle onto the middle section of the pillow.
Fold the back two pieces over and sew the remaining sides together.
When finished turn it right side out and insert the pillow form. This is what the back will look like with the sides overlapping forming the envelope.
Here she is all finished! This is so simple. If you have any questions about this tutorial you can leave a comment or ask me on facebook. If you don't want to bother with making a pillow like this and would rather buy one go to Dear Lillie. Her pillows are my favorite! They are so gorgeous!