Hey,
I'd suggest creating your own thread that would look good (potentially even a thread design, which definitely catches users eyes). Of course, don't forget to mention which regions you boost on, prices and anything else that the customers would need to know. Offer vouches to users, but don't forget to ask them to send you a trade request. Once you have enough feedback, I'd suggest looking for threads that look for a boost and offer your own services.
P.S - If you want your profile to look good, don't forget to add a profile picture and potentially purchase Premium.
Good Luck on the grind ;)