Evening, grade me, follow anything useful in it.. ..whatever helps you sleep at night or anything else during the midnight hours

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Got on a train too aberdeen at inverness, wearing a striped shirt with a thin black tie and beige trousers + smart but casual brown shoes.
I was expecting a quiet journey when low and behold 2 HB's (probably 7's) turn up and sit opposite me, they were older than me possibly 21 and 23. I kept things relaxed.
Sp: Hi, how are we today
HB'S: fine *sitting down giggling*
HB1: that a chemistry book?
Sp: yes you guys students?
(spent about 15 minutes discussing Secondry school to link and found out they were studying forensics/law and sociology and hispanic studies)
I was getting relaxed body laungauge and I hadn't even asked for names, nice.
Sp: do you think these stripes make me look thin?
HB1+2: not really I think thats a common misconception you look average to me.
(anything I could do here?)
HB1 has a cat nap (proclaims repeatedly that she not being rude ) and for the most part she is listening to the convorsation wich I have with HB2.
I talk with HB2 about social groups, favourite colour - cold read, sport, comedy, and I manage to use preselection for social proof, with a phone call from another girl half way through the journey.
We all get up at the end of the journey and I close with e-mail addresses, I say "bye" then walk away and leave the station promptly to demonstarte non clingyness.
Conclusion: Should I have been more direct and looked for a hug close? (I found out they were sisters so kiss close would be inappropriate)
Should I practise more attraction because the IOI's were kinda hazy and unclear. e.g. inner wrists were pointed at angles towards me.
Cheers
Sparks