The first thing you need to do is decide which country you want to move to. Each country has its own requirements both for nursing and immigration and most countries will require some form of language exam is the language is not the same as your first language for example you will need to do an English exam for England Canada Australia New Zealand and America if English is not your first language.
There is no real shortage of nurses in most countries these days. This may take you several years to succeed but if you are determined to do so you will succeed.
I suggest you read the advice on immigration forum as well as the nurse registration forum as there is plenty of information there is in regards immigration and nurse registration for a variety of countries.