One of the techniques I use to shape my pillow tops is to block them on the needles. I use the cords of two 47 inch circle needles. Needle A, goes across the top and down the left side. Needle B holds the stitches across the bottom and up the right side. This allows me to use the cords as blocking rods. Below is a picture of my latest Needlepoint Knitting pillow top. This one is for my grandson, who is a mighty hunter. 🙂
The stitches have been picked up on the edges and are set up to knit the tubing for my corded edge. This process is completed before I wash the top. Notice the cord loops in the corners; needle A, in the upper left corner, and needle B in the lower right corner. These loops free the cord, allowing me to pull the edges straight. To secure the pillow top in place, I use T pins. It works great.
When dry, I will be knitting the tubing using the same method used for working with 2 circle needles in the round. You can find this method by typing in “socks on two circles,” or “knitting with two circle needles,” in you search engine. There are some good videos on YouTube.
Thought you might like to see this-thought it might be helpful.
Happy knitting- KT