Trupti,
Missed this post on the first go round.
I recommend taking 1ZO-031 (Oracle db fundamentals) next. This will get you certified as an OCA (Oracle certified associate.) After that, you can go on to the next level of OCP. You have to be OCA certified to get the OCP anyway.
For future reference, the Oracle
certification page has all the details and requirements. Make sure to click on the details link as it has valuable information.