I busted out the first five in a week and for some reason I just couldn't get the sixth one finished...until this week.
Here are the finished products (flipped corners show the back side), all have zippered bottom seams:
The top and bottom pics are the 16x16" pillows and the rest are 14x14". I sent my mom a preview before I shipped them and she loved them! Success!
Now, on to a sewing machine cover.