Just start off a thread. Do orders for cheap in the beginning, show people you're efficient. But I would suggest putting down a deposit with one of the Top servicers. I would hire you under my wing, but would need you to perform a few services before hand (paid of course) to see if you're efficient.
Make sure you keep the customer updated, never be rude, keep to time frames and make sure to watch videos and be as efficient as possible. EFFICIENCY is the main thing here.