It would be true to say that I look a bit scary when frowing or glaring. Occasionally, a photo gets taken before I have composed my features and I wonder at how scary I look. A particularly awful one got taken when I was a bridesmaid. I was signing the marriage certificate thinking that I mustn't smudge the totally permanent black ink and that these people's grandchildren etc would one day see this so it had better look neat, how important it all was etc. (You were signing your own name and you were 30, how hard can that be?)The picture shows me looking frowny and scary. Again. Oh dear.
On Thursday a rather lively boy at the back of an exam needed a look to re-focus himself on his exam paper, before whatever he was doing came to anyone else's attention and potentially caused a distraction. So I stared, glared and half-smiled in quick succession in a way that was meant to communicate, 'Stop it now, do your exam, but I know you don't really mean any harm.' That was the intention and he did indeed smile and get back to his exam. However 3 boys sitting in front of him looked up and affected expressions of, 'What have I done? I'm entirely innocent.' So not totally successful.
Could do better.