Quote:
I simply either say "Hey there

", something related to their profile and turn it into a question, or just say,"I can't think of anything clever without making it cliche butt your pretty"/etc.
That's not ideal at all. She will interpret it as apologetic.
Simple statements will work better. Trying to come off interesting or different will only come across like you're trying too hard.
Here's some openers that I've used on PoF which have turned into real interaction:
"Soon?" (Her response was "why not?")
"Hello [Girls Name], you absolute beauty"
"You're going to be my woman"
"What do you reckon about me and you then"
"Oh wow, absolutely beautiful. Get off this site and get with me"
"Will you be my girlfriend"
"[Girls Name] you absolute beauty, how's it going?"
On Tinder I often use:
"Hey [Girls Name or "beauty"], how's it going? How funny is this app x"
I haven't tried OKCupid but POF is a lot more profile based than Tinder. On POF it's worth demonstrating something about your personality and making it catchy - I recommend using at least 1 photo that demonstrates social proof and a description in which you don't take yourself too seriously.