There's this girl I see every week or so on the train. Insanely cute. But for some reason I've passed up two chances to talk to her, wasn't exactly sure why... but I think I was ever so slightly intimidated by her. It's strange, I've never had this problem before - maybe it's because I missed the first opportunity and consequently been thinking about her since?

Plus she was constantly making eye contact, sitting near me etc. Ugh.

The situation is made even more ridiculous by the fact I vaguely know her, so it's not like I don't have an obvious opening.

Any advice/solutions would be greatly appreciated, thanks in advance .

Sounds like you give her too much value. You associate her with value in a way that you dont do with other girls. Other sets doesnt matter to you but this one does, you feel the need to "win" this one. Stop seeing her as a potential mate and start seeing her as a warmupset, just practice, if you fail... No biggie.