My inspiration for this project originated from a Patemm changing pad.
DIY Travel Diaper Changing Pad & Playtime Mat
How To Make A Folding Diaper Changing Mat
How To Make a Circular Pattern
Sewing On Bias Tape
Easy Folds for Changing Mat
To create easy fold lines and sections for your items, fold your pad in thirds. Starting with the left, then the right and mark your folds with a pin. And iron your fold so that you can see it clearly to stitch. Pin along the stitch line, if necessary, to see it better. Stitch through all thicknesses starting at the top and going down on both lines (See illustration below) all the way to the bottom bias tape of your mat. This will create 4 sections. The top and bottom sections will be approx. 8×12″ and the sides approx. 8×24″. It is hard to see the thread in the photos, but it does create 4 nice sections and makes it easier to fold up the changing pad.