Another keypoint Question

I have read everything I can get my hands on about keyline and I still can't say with confidence where my keypoints are.  Perhaps I'm overthinking it. Darren Doherty says it's a point in the valley after the valley goes from a steep incline to a gradual incline.  The thing is, my valleys are the opposite, they have a gradual incline and then go to a steep incline.  Would it still be the same point? Here is one of the contour maps of my property, if anyone has any insight that would be great.  

It looks to me, like there are no keypoints on that property. The keypoints of each of the valleys on the property are beyond the edge of the property. On that property you may want to make your waterworks based on the break-lines...

Thanks so much Joseph.  It seems so clear now.  I really appreciate you taking the time to mark the keypoints! TAKE CARE!