Maaf kijiyega, lekin aaj mujhe thoda jukam hai. The best way to improve in any language is practice. Try watching Indian movies with the English subtitles to get a sense of how English works. Practice writing in English, first short then longer pieces. Keep a dictionary close so that when you find an English word you do not know, you can look it up. And post here often, there are lots of great teachers here who can help you get better.