There’s nothing to panic about. You were just a bit unaware and the controller asked you to read the manual once for clearer views on using the atc. You’re not being judged or something, everyone has faced this believe me. Just get to the IF website and go through all the tutorials, they would be of immense help… And for sure the IFC is best way to receive help… There are a lot of topics from which you can get help.
Never panic with the atc, just simply surrender and do what they say, they’re really well trained for that!
Again, just go through the manual and you’ll be more confident!