Help with a girl i like!!!!?

I really need some tips on girls, there is a girl st my church that I really like and when we hang out I like her more and more. One day she gave me a hug (back in december) and i give most everyone in the churh a hug except her because i am nervous (hands start sweating) when i get around her and dont want to embarres myself. On saturday night we were playing sardines and she is afraid of yhe dark so she put her arm around mine and i told her everything is ok and its going to be alright cause i was there (this only happened because it was dark and i was warmed up to her). I am scared to go up to her and talk cause idk what her reaction will be like if j come up oit of the blue. We did dances today and i was debating on weather to tell her she did great or to just keep to myself, i really wanted to but i was scared. I am 99.9999999999999999% sure that she likes me but i dont want yo embaress myself (like i said before) and i really want to just give her a hug cause i see other people give her a hug easily, hang out with her to get to know her more, and to just have fun around her. PLZ I REALLY NEED SOME HELP!