English Learning - i found myself have a difficulty to speak properly?

Hi guys,
I'm puzzled that i can't speak properly.
English is not my first language. but I've been learning it for yrs.
I can score okay in writing, reading and listening but so poor in speaking.
I've been trying to read the textbook or newspaper aloud.
When i just read the text aloud, I can speak fluently.
But when i get into real conversation, I'm kinda embarrassed and nervous to speak.
Like yesterday, my uni tutor talked to me and said i scored high in the mid term exam, congrads.
I couldnt response him well. I could just say sth like 'did i?' 'thanks for telling me'
I shld've chatted to him more. How can i get thru this barrier?
Also, I want to improve other English skills like reading and writing.
Is reading newspaper the best way to do so?

Thanks!!