I'm going to try my best luck at sending Jared Padalecki a gift, since it's his birthday on the 19th

And I'm also going to be sending a picture so that he can sign it.
My question is, which is better, SASE or IRC? This is my first time at doing this so, I'm a little confused.. And is an SASE only used in the UK?
It would be amazing if someone could help me!
and greatly appreciated, because I don't want to make a mistake or anything

I'm going to try my best luck at sending Jared Padalecki a gift, since it's his birthday on the 19th :D And I'm also going to be sending a picture so that he can sign it.
My question is, which is better, SASE or IRC? This is my first time at doing this so, I'm a little confused.. And is an SASE only used in the UK?
It would be amazing if someone could help me! :D
and greatly appreciated, because I don't want to make a mistake or anything :(