I have seen Translation Campaigns that requires you to put your previous works/translations. Is there any chance for a beginner, who doesn't have translations yet, to join this kind of campaigns? If yes, how? Thanks!
I think you just need a proof that you can translate very well to be accepted, but there is a chance that you will be accepted if you can discuss with the person that managed the ICO and tell him that you are proficient in the language that you will ready to translate. I can't promise you that you will be accepted but you should try hard if you want too much this job.