If you want something in life, experience should tell you that you have to go out there and get it for yourself. Opportunity seldom knocks on the door quick enough for any of us; therefore if you dream of working abroad you need to start looking for suitable vacancies in your overseas location of choice.
If you speak a foreign language you might be drawn to countries where they speak that language because you will have an obvious advantage over other overseas candidates. If on the other hand speaking English is your only linguistic skill you should either look at opportunities in English speaking countries or target countries like Dubai in the United Arab Emirates where the business language is English and where there are a plethora of job vacancies.
Whichever country you settle on you can use the internet to search for employment offers, recruitment agencies and potentially suitable employers based in that country, and you can then begin contacting them one by one.