If you are extending your YJSG based theme this is the place to start.
YJSG comes with over 400 font icons by
FontAwesome
that you can place before or after the module title.
To set this up go to module manager, click on Yjsg Module Options tab and click on any icon you like. The icon before/after inputbox will be filled in automatically. You can also start typing the icon name. The icon you are looking for will be placed on top of the list.
you can than transform your module titles from simple text to something like this: