For me it depend on how i well i know the girls..LOL

If i confess to a beautiful girl i never talk to, i would dying inside. *It happened cause your intuition sometime will tell you if she suit you or not*.

If i know her well, it's easier to confess..

Also it depend on your body language, so try to get the right atmosphere first and then confessing.

Not really...
Actually... i confesed to my exboyfriend!!! one day i was talking to him and...:
Me: "Uhm... do u like me?"
He: "eh...uhm... y-y-y-yes..."
Me:"Me 2!!! Do u want to be mi Boyfriend ;P???"
He: "waaah... y-y-yes...!!!"
XD It was very funny!!!

it's hard for me, especially if i don't know if she likes me back. i'm not very forward with my feelings to begin with.