Norny wrote:
If I see something such as rolling of eyes I know it's most likely negative, so I base it off what was last said (the context). I know that eye rolling in particular is not always negative as I've seen others roll their eyes after I deliver a flirtatious comment their way, and when that happens I assume they're slightly embarrassed, amused or happy.
I take the eye roll to essentially mean: "
How Ridiculous!" - which can be negative and sarcastic

("
Oh, Brother!"), or exasperated

("
Gimme a Break!"), or self-deprecating

("
Duh, Silly, I Know"), depending on context.
I think I read eye signals fairly well - when I notice them - but I'm not generally making much eye contact, so I probably miss a lot more than I see.
As for whether I can use them, I couldn't guess. I often think I'm smiling when I'm told I'm not.