Social Media Contents and Business Cards Illustrations

I'm a mortgage broker as self-employed. I've just started on my own as of December. I want to be able to reach more customers as thats the bottom line motive of converting leads. I also want to be able to give a visual experience to my current customers for being on this journey to their homeownership. I'm looking at some sort of personalised illustrated cards that I can send at the end of settlement, so customers can leave me a review on social media etc.