Dzonic, here are some things that I can suggest while you start on your career:
1. Try to read as much on this site as possible. Especially the forums and blogs.
2. Get an idea about what investors are looking for.
3. Try to identify a few investors who look like they are good potential clients who can close. PM them and establish a rapport with them. That gives you a high quality list of potential clients.
Then you can talk to the different brokers in your area and you will be negotiating from a position of strength. You will also find that you will be more confident when you negotiate because you know you are bringing something of value to the firm.
BTW, I have no idea how RE brokerages work. I am assuming it is similar to an insurance brokersage where the firm is always keen to get performers in the door.