The best way to gain some trust and build a reputation for yourself is to just dive headfirst into the community... become active on the forums, do your best to offer thoughtful/helpful advice to other players, start becoming active in the markets and establishing vouches from successful trades, and donate it you are able to. You will slowly gain trust overtime, and gain the respect from other members that will lead to you becoming a reputable member of the Sythe community
Just in my personal opinion - any vouches recieved for offering free services, giveaways, just "being a nice guy", or spamming threads all day just to raise your post count don't really count towards being "a trusted member". Atleast in my eyes... You see tons of new guys who offer free services and things like that in order to earn vouches and establish an image of trust, only so that they can participate in bigger trades down the line and scam somebody for a lot of money.
I think the only way to
TRULY earn respect and trust of the community, particular the more elite members and moderators, takes alot of time and occurs naturally. Doing all that you can as fast as you can just to earn "trusted status" won't get you nearly as far as just being a genuine, active, contributing member of the Sythe community. That kind of status and respect takes a long time to earn and I would imagine that in the long run, that is what seperates the guys who are genuine assets to the site from those who are just seeking high stature for their own personal gain.
Most of these are just my personal thoughts by the way. As you can see, I am still a new member to this community myself. But I think anybody can achieve that kind of status in the long run if they are active on the site daily, and are truly dedicated to helping out other members and keeping this forum such a great place to hang out and trade. Without such dedicated members on this site putting in all the hard work they do, it would not operate nearly as smoothly as it does.