either don't do it. Usually if something makes you feel creepy you are most likely doing something creepy. And while she may not know you have the best intentions she may find it creepy.

But if you do want to do it dont write a long awkward message. Just be like hey you seem like fun i was wondering if you would like to go grab coffee or lunch or something throw me your number if you want to plan something. If she doesnt who cares at least you did and a thousand did and failed are better than one i could have.