Hello and welcome.
I see you live in Idaho. I was born and raised in Southeastern Idaho. But I am an Army Wife so we are all over the place. But Idaho is still home. Your little boy is so cute!
To get the little boy icons in your signature you put a [ with XY and then] in front of the name (or after depending on where you want picture.) When you are posting, you see all the pictures at the bottom, if you hold your cursor over one, it will show you what "makes" it.
Also in the blue-ish line above where you type your message, there is a smiley face. Click on it and it will bring up a box that has all the emoticons in it. I just don't know if it does that for your signature line.