I am at the stage where I can ask a girl where a building is located. But I flake when I want to tell the girl she's cute and subsequently ask for her number. This is how it goes:

Me:" do you know whet building x is?"

Her: gives directions

Me: while she is giving me directions, I 'm thinking I can't tell her she's cute it's too awkward

Me: "thank you". Then I walk away

I feel as if it is inappropriate to tell her she's cute