Help an old man that hates computers - how do I update/post sig pics?

[Leaping1]

I am trying to post picture of my old 2011 RT-S SE5 and show year and model of my RT at bottom of posts as someone asked us to do. Please answer in laymen terms so I can maybe understand. Thanks Leon

[GrayRyder]

Signature- Click on settings at top of screen, near where you sign in, then go to left margin and click on "edit signature".