I ended up using this very thick spongy felt material in a loop like the lace on it. The height is nearly the same as the pressure sensor itself.
To make the layer thick I made in itself two layer of embroidered feld together.
In order to get this layer really thick I made a kind of loopy carpet. It also follows the curved wave shape that we see coming back in almost every layer.
The layers are getting thicker now, so I used a padded piece of cotton with top-stitching following the original lace pattern.
I used the same crochet technique with different thicknesses of thread which I stitched on a layer of felt in the wave-form of the lace.