I went out and approached 3 girls today. got #closed on all 3

Approach number 1:

I saw her sitting down reading a book and so I approached with my usual "Hi, I saw you sitting down here and wanted to come over and talk to you". I introduced myself and so did she.

Me: What are reading there?

Her: Its a play. Its really dark and not that fun to read.

Me: oh are you performing in this play.

Her: yep I'm playing ....(I don't remember what it was)

I have a very interesting major and so when we got around to the standard "what major are you" topic, I got her interested and thus showed some high value. I noticed she has a weird tattoo on her ear. I took that opportunity to do some kino by touching said tattoo. I told her I had to leave ( I really didn't, but I was told to eject on a high note). I asked if she wanted to grab coffee sometime. She said yes and gave me her number. ( I tried to set up a date on the spot but she was hesitant, saying that she is busy preparing for spring break. She said after spring break she would be free.)

Approach 2:

I walked over to her while she was studying some notes. I did my usual "hi" routine. We talked about what she was studying, why she is so interested in Indian culture and her aspirations to dance. I showed high value by mentioning that I dance as well. Told her about my years as a dancer and what made me love the art form. We connected well. She mentioned she had a star piercing on her left cheek and I took that opportunity to touch her face and cheek ( In retrospect I should of escalated the sexual tension by giving strong eye contact and going in for the kiss) I again cut the conversation short and ejected. I told her we should continue this conversation at some time later. She gave me her number, but told me that she already has a bf.

Approach 3: I was walking down the hallway and saw her sitting down just waiting for her class to start. I walked past, waved hi to her and walked to my office. I was tired of approaching and so at that moment I didn't want to approach. Once I got into my office, I convinced myself that I needed to approach. I needed to go back out there and talk to her. And so I did. We talked about her drawings, her lack of focus when it comes to what she wants to major in, etc. I mentioned my dancing. This got her interested and her enthusiasm increased. I cut the conversation short and asked her out to coffee Friday. She declined saying that she will be driving home for spring break ( dam you spring break). She would be down to get coffee after spring break. And thus we exchanged phone numbers.

Positives:

Verbally expressed my strengths well (dancing, interesting major). Showed her I have an interesting life

Took the opportunities given to me to kino on the face and on the ear

Negatives:

Need to create more sexual tension (not sure how to go about that. Let me know what is a good way to achieve that). The conversations can be too casual.

Should of gone in for the kiss on the second approach: missed opportunity

Overall I thought I did well. The three girls will most likely all flake. They seemed nice, but I didn't build enough attraction. I have been reading articles stating that I need to make her invest. I'm still unclear on how to accomplish that. Can someone elaborate on this issue.