building attraction is the key to any form of game, you should always be building attraction, remember, attraction + comfort = seduction, you definately need to read up alot more the key to direct game is being comfident and straitforward with her
might i recomend going to youtube and searching "david x" you will find some good stuff, he is one of the best direct approach instructors
check out the link i pm'd you, it will help alot
classic situation of stop thinking and talking about it and do it. Start by flirting a little (tease, push and pull) to remind her that youre a guy to take seriously, because it seems like youre sliding into friendzone now. but after 5 or 10 minutes playfully ask her out.
Try not to talk about anything too serious until she responds to your request (this will keep the fun loving, light hearted side of you fresh in her mind for her answer)
She likes you. She's giving great signs. Try to be more flirty and use more kino.