[header] How to introduce yourself to a girl [title] Gauge the situation. [step] Is she alone, or in a group? Is she relaxed, or is she deeply absorbed in her work? Try to approach her at a point when she'll be open to meeting someone new. You want to make a good first impression. 
[substeps] If she's alone, consider what she's doing. If she's in the library, with her headphones in, obviously working, then you shouldn't bother her.