Some independent garden centers will do a design for you for free if you agree to buy the plants, or at least spend a certain amount on plants, from them. You don't always have to have them install, just ask and tell them you want to get your own hands dirty. Why don't you go to your profile page here and add your location. SE FLorida is kind of broad. If you indicate a specific location someone here who lives nearby may recommend a good resource for you.
