First Twitch Overlay

Hi I am just getting into all this streaming malarkey, so I have no real idea how to make one of these overlays. It would be nice if I could create one to make my page/streams look more professional, but I'm not really clued up on all this yet. Is it possible to get them custom made, and if they are wot is the cost to do it? U can contact me on dj_cannie@hotmail.co.uk
Thank you!