First thing, Trulia makes it taboo for owners to enter their houses in the listing section. It's reserved for agent/broker listings. However, you can create an ad in the blog section, and upload youtube videos of the property as well as photos. Other than that, all I have to offer is the link to my blog, which is below. It may have some things of interest to you in it. Good luck. In the Miami market you will probably need it for sure.
As others have mentioned, the first step is to make your property look it's absolute best, inside and out, since you'll have lots of competition. The second step is to get the pricing correct, and the third is marketing the property all over the place, online and off. The first step is up to you, while you can enlist the help of a realtor for the second and third steps. I am in zip code 33127, so likely not too far away. Let me know if I can help you further. Thanks!
Your best chance is to list with a reputable broker and let them do the work by advertising in major websites and local mailings.
Good luck, and let me know if i can help,