Hi suman, I hope the above gives you some ideas on how to approach it!

What you are showing there is a pretty advanced and difficult project though, because of it's "all swooping around" type shape - you'll need to be editing control points in multiple views to form the 3D curve paths - you won't be able to construct it only with 2D curves alone and that's what greatly increases the difficulty level here.

Like Mauro shows, Flow can be a good method for mapping some initially flat decorations onto the curved result, if you want those pieces to follow the curved contour of the target shape. There are some other links of examples and descriptions of using Flow (which is a new command for MoI v3) here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4856.2

- Michael