How to not be shy when you like a girl in street?

I have came here to Europe i can't not make a friend and especially girlfriend i try to go to places and when i find a good moment to talk a girl and tell her i find her interesting I get stress and my heart beat fast scared from reaction I know her reaction won't do anything physically to me but due to my high value dignity and shy too i miss chances and i blame my self so bad now im back home next few days without having a girlfriend here.. so please, no more fun do you have any comments about this shit i go from.. sorry for my English
How to not be shy when you like a girl in street?
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