Hi PallaviSingh. Welcome to the forums.
SitePoint has a few books you could take a look at:
The Principles of Beautiful Web Design
Sexy Web Design
But don't be afraid to be original. There's a lot of sameness out there. Study from the best examples you can find and see how they did what they did ... then find your own style. But always remember that content is more important than design, so let the needs of the content inform the design. That's your best reference point, in my 'umble opinion.