Hello and welcome aboard. To modeling this kind of object (I don't want to say texture because it doesn't seems a texture) you need a little bit skill on modeling features, more on polygon modellong with hypernurbs.
For the top of bed you can start by taking a plane subdivided object and after make it editable (put it into hyperN as child) try to move some points and you will notice a soft movement on the structure.
The same for the internal part, if you start with a solid object subdivided into hypernurbs you can move point to make it soft as a fabric or other materials.
It's not simple to explain into a forum because you need a real tutorial to how approach the modeling into cinema. Did you searched into YouTube or on Maxon tutorials into help menu?
To make a good pillow the right way is to use the dress-o-matic features into character menu ( clothilde tags)

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