I am having a really hard time with making soft objects, like cushions, pillows, couches, beds, etc.  Can anyone help me or tell me where is a good place to find a tutorial or something?  Attached is a picture of a wooden couch with a cushion on it that is my most recent soft object project.  (I made the cushion with a line and then extruded it.)  I have tried all different combinations of edge slicing and cutting, tessalate, turbosmooth, chamfering, and manipulating vertexes with soft selection on.  I just can't get it to look soft and most of the time, there are extra creases and edges that I don't want in the object after I modify it with something.

  Any help would be appreciated.  Thank you!!