Nursing Career Crisis.

Hi everyone!
Im 22 y.o. and it has always been my dream to work as an RN in the US so after I finished my nursing degree last 2006 here in the Philippines I dedicated almost a year in preparing and taking the IELTS and CGFNS exam,thankfully I passed. Recently just this March I was accepted as a volunteer nurse in a private hospital(NICU). My concern is, Am I on the Right Track? What should i do next? Also is it wise to sign myself a contract to an Agency that will help me find an employer in the US. Thankyou very much and God bless!:redpinkhe