1
I was so embarrassed!
Point to yourself, then sign 'embarrassed' using both hands framing your face. Make sure to scrunch your face to show just how awkward or mortified you felt in that moment.
2
Please don't be embarrassed.
Sign 'please', 'don't', and then 'embarrassed'. Keep your facial expression warm, gentle, and reassuring to show the person that there is no need to feel awkward.
3
He gets embarrassed easily.
Point to the person you are talking about, sign 'embarrassed', and then sign 'easy'. Your facial expression during the sign will help convey the shy emotion he typically feels.