Super Ego is a Father Figure, principled and strict in its own way, keeping an eye on the undersirable impulses of young ones (Id and Ego) to force them to mend thier ways ... either by changing the course of their desires or by suppressing them. In our day to day lanuage, we remember Super Ego as "Conscience".
In my this image I have presented an old historical passage as our Mind ... poorly lit, a bit broken and carrying irrelevent scriblings on walls (as if they are an out come of irretional desires and impulses). The passage is becoming brighter as it moves towards an old Experienced Eye i.e Super Ego ... which in return is keeping a watch on whatever is happening around it.