You must refer some grammer book like WREN N MARTIN to improve ur basics and try to read as much as u can in english, whatever u like some comics, tales and newspapers.whatever u analyze or experience in a day, just recall and write everything in english before going to bed . u will definately gain from this..
Speak infront of mirror agaian & again. read newspaper daily. read short-stories. improve ur vacab. u should also involved in group discussion. always speak in english. what u speak it dosen't matter, but always speak in english.
Communicate more in the language...first try making up short and meaningful sentences and then proceed from simple to complex vocab....discusss the upcoming topics and take the aid of dictionaries,newspapers....