Translating is a very competitive field. As a beginner your best options are to leverage your network (if you have one) or do some free localization so you have something to show.
You have a better chance if one of the languages is both in demand and not well known. Governments of small countries for instance often have nicely budgeted localization projects. But they tend to be snapped up by the local academics.
Translation is much more than knowing a language, you normally would indicate certain fields to translate in as they may have quite different needs. Translating medical or legal documents for instance require specialised language knowledge.
Basically, if you're starting off as a translator with no network then don't quit your day job.