Merely attending an English Speaking Course is not going to help you speak
with ease, particularly memorizing grammar rules.
Practice whatever you have assimilated in class
watch English news (Indian news channels first)
learn to think in English, not mother tongue
listen (eavesdrop) when people use English
good TED talks too help you improve vocab.
Finally, don't hesitate to speak even if you're wrong.....
Constantly using the language would make you better by the day