This is the wrong section, however, I'll reply to you.
First you should take a look at what roleplay is about, including the rules, and perhaps read a guide (
http://www.forum.sa-mp.im/viewforum.php?f=12). Alternatively you can contact a helper (or anyone that wishes to help) In Game, and I'm sure you'll be given a few tips or even a full lesson.
Roleplay isn't something you learn overnight, you learn every day, but most of all, it requires imagination.