I just came up with this design for a pitcher and thought I’d make a 3D model out of it. nothing special actually and I haven’t been working with blender yet for a long time.
The image is too dark to really judge.
Compare your image with the first two that are to the right of this page and you’ll see what I mean.
Forget the last one: Endi’s work, as himself, is hardly standard. 
Besides the lighting, gamma correction is important. I learned about it on the following thread, but it assumes some knowledge of using nodes:
http://blenderartists.org/forum/showthread.php?t=119205
