Met her ~3 weeks ago in a class of 20. She was sending a lot of IOI's, a lot of eye contact, commented on my arms (I lift), etc. I see her 2x more every week in a class of 500 but we'd go into the room at different times and never manage to sit next to each other. I didn't have a lot of time to talk with her, but I made small talk and negged her a bit when I had the chance. Last class she was actually the one who started light kino and tapped my arm while talking, but I was careless and overlooked it until after class. Today I saw her in a class of 500 but she made no eye contact and talked to other people. I'll see her again in the class of 20 in a bit, we're in the same group of 5 people, and I'm far and away the alpha male of the group.

1) How do I salvage this
2) She's clearly into guys who work out, and I'm pretty jacked. How can I use C&F and/or DHV without coming off as overly arrogant or turning her off.
3) I need to make small talk in class, and kino in class. It's generally quiet once lass starts but I have 2-3 min to talk before that. How can I do it casually?
4) There's a coffee spot in the student union, which is like 1min away from class and connected in the same building. How far does small talk + kino have to go before I can bounce her there, and how do I bounce here there.

I'm very new to pick up, and the only thing I can do well is neg. I get girls to laugh, qualify themselves, and throw tons of IOIs at me when I first meet them, but I can't keep the spark of attraction lit.

I've built a bit of comfort with this girl, but I don't know how to show social value, DHV, and I don't know of any routines I can use or have any midgame.

Any advice would be hugely appreciated.