Samurai experience

This time, I was thinking to say “pretend”, because I could not say it last time.

And when practicing the sword, I holded the “lower stance” just like last time.

I said “pretend” with in my mind many times.

And I said, “I pretend recieve a sword”

I said!

I was very glading in my mind.

But I did next explanation with しれっとした顔で.

I wonder if there are しれっとした顔 in English.