My eyes are blue, too and I have brown eyebrows. I wonder why it is that guys often get the nicest eyelashes? Mine are okay but not nearly as long as those some boys I know have. I even know a couple of them whose eyelashes are curly, too.
Some women spend a fortune to get their eyelashes to look long and dark and curly but I personally hate mascara as it feels icky.
I also wouldn't pluck my eyebrows as too many women overpluck their eyebrows and it doesn't look good.
Can't see what is so scary about most eyes unless they're red or really angry looking or evil or all three (or 2 out of 3). 
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Break out you Western girls,
Someday soon you're gonna rule the world.
Break out you Western girls,
Hold your heads up high.
"Western Girls" - Dragon