How do you add the icons of your mains in a signature?

[katsudon]

Hey guys, I was trying to figure out how to do this to give my signature a bit more pizzazz but for whatever reason, can't seem to figure it out- can someone explain it or point me in the right direction please? Thanks! 

[StylisH]

Go to the settings and under signature click the smiley face and the menu should pop up at the bottom of the text box

[katsudon]

Awesome, thanks!