If you where a 12 year old girl how do you tell a girl you like her?

i like a friend of mine and i want to kiss her and tell her i like her! i am hypnotise with her lips1 i have tried to get closer my face to hers but dont make the final move! what conversation should i start? should it be like heyy why do other woman kiss other woman? wanna try ? or what pliz help i am inlove and i also want to like her and have a little (girl not actualy but you get it)