just pluck them Ib. After you shower. take out a few each time until you get the look you want. Never pluck above the brow. Well maybe. but only once you're a pro at the rest of it
Here's a guide
http://www.howtoshapeeyebrows.net/
As for the hair, decide if there are any bits you care about (bangs/no bangs, behind the ear or no, feminine/masculine.......) then tell them "I need something new. this is what I care about, beyond that you're the professional and I trust you". It's worked fine for me and my daughter many times. Mine is usually "I need it shorter, a few bangs, shaped round the ears, no shaving the neckline, no wedges and beyond that be as feminine as you can -maybe textured on top -you make the call on that". I'm so easy
. And for my (swimmer) daughter it's "make it look as thick and long as you can while still having a "style" -you're the professional, we trust you" It's OK to say these sort of things.