Calm down more, consider her nothing more than practice.
Tell her you've made up your mind. You want a woman who you can talk to.
Talk to here and talk to her. Eventually you'll find more things in common.
Clean up your place, then at some point during the first week or two invite her over.
You'll know when you have her where you want her.
Most importantly just play around and have fun, you'll get your chance if you keep trying.