Don't mind at all. If one of my photos can help you get an answer to a question, thats great.
As for the top layer I used a few diferent methods on this layout. The 2" foam subroad bed is held up by supports from the benchwork on the first part of the grade (front center) and the topof the hill (far right). The second section of the grade ( where your arrow is) is supported by foam supports cut to size then the foam was cut and stacked around it. and the upper return loop is resting on layers of foam stacked on the benchwork.
It doesn't need to be that complicated. you can add layers of foam to your existing layout and get those flexable foam grades.(made by Woodland Scenics I think)