Hi suman, if the kind of sofa you want to make has a lot of little folds and ripples in it, that can be the kind of thing that works better in a polygon modeler rather than in a NURBS modeler like MoI.

NURBS modeling works more by drawing curves and then producing surfaces from those curves, so it kind of works more naturally for objects that are well described by profile curves. But things that have little bumps, ripples, and folds in them are not particularly naturally described by profile curves, those kind of details tend to be easier to kind of sculpt into a shape, and polygon modeler work more by that kind of sculpting type method.

It is possible to make stuff like that in MoI though, see here for some examples:

http://moi3d.com/forum/index.php?webtag=MOI&msg=2983.1
http://moi3d.com/forum/index.php?webtag=MOI&msg=3489.1
http://moi3d.com/forum/index.php?webtag=MOI&msg=3777.1
http://moi3d.com/forum/index.php?webtag=MOI&msg=1517.1


If the kind of sofa you want is more "structured" it would then fit into MoI better, using the same kind of construction techniques as described in the introductory videos here: http://moi3d.com/2.0/docs/tutorials.htm

If the kind of sofa you want is more rumply, then that's the kind of thing that fits in better with a polygon modeling system rather than in MoI.

- Michael