How to make up for my mistake?

Yesterday when I met my employer, he came to pick me up and take me to the work. So when I went downstairs, I didn’t recognize him from a far and when he was waving his hand, I thought he was a creep and twisted my face as a natural expression I would have while being creeped out, because I am a very expressive person.

Then he called my name and I found out it was actually my employer and felt so awkward and sad that I made him feel bad I guess, so before then he was always calling me “dear” now he just calls me by my name. Even though he said he really liked my performance yesterday

How to make up for my mistake?
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