Advice for new agent

[Phil Park]

I am a new agent that earned his license in March. Since then, I have had a few clients and submitted some offers too but the deals fell through due to unforeseen circumstances (Lack of funds, seller backing out, etc). I have since then started to screen potential clients by requiring them to get a pre-qualified letter by the bank. I have worked on a marketing plan and they have been spreading the word that I am an agent but I am at a stand still with leads. I have been sending monthly newsletters and drip campaigns but what else can I do to improve my business?