Hey, I have completed 2 season of greg, still a little tensed about the speaking part. Any inputs on how to improve ? My overall fluency is great but the structure and spontaneity gets messed up.
Chill. This happend to me too. Just remember this is just a test to check if you can talk English, not a paper presentation 
You can time yourself on a stopwatch and practice in front of the mirror. Looking at yourself while you speak will boost your confidence and correct any mistakes you might be making. At least it helped for me. All the best!