Just create a portfolio if you don't have. Although you dominate a tongue it doesn't necessarily means you will be selected to translate so a material proof will help you outweight other contesters. You may also want to offer a quick translation of a piece of the thread for further reference, I would appreciate some proactive move like that if I'm running a campaign.

But definitely it is possible for a newbie, your language abilities are not reflected by this forum rank, although you can reach Jr Member rank in a few weeks.

Anything that will give you an advantage against other contenders as well as well dictated examples should matter more than your current rank, at least it would for me if I was running a campaign.