Log: How should it end?

As my product is a documentary extract it doesn't need a definite ending however, I am struggling on how to actually end it, whether there should be music and the clip should fade away, should it be an ad- break as it's a television programme. I am struggling a little and need some help with this so I have been researching previous blogs from the year above to get some ideas to what they did if they made a documentary extract like me.