Fabric impregnation
Spread out a sheet of baking paper on an ironing surface. This should be a few inches larger on all sides than the fabric blanks.
For impregnation, place a fabric blank on the baking paper and sprinkle it with beeswax pastilles. Cover everything with another layer of baking paper.
Set your iron to cotton setting. Once heated, place it in the center of the fabric and wait for the wax to start melting. Iron in a circular motion from the center outward, using light pressure, until the wax has melted all over and can no longer be spread. The entire piece of fabric should now be saturated with the wax. If it still has any free spots, sprinkle some pastilles on it again and iron those in too.
Now turn everything over and iron through the baking paper the fabric from that side as well. Remove the fabric from the baking paper while the wax is still liquid.
Do the same with the second piece of fabric.