Look Down! Worsbrough Dam collage

I got the pink background wrong.  My main job for the day was to change the colour, which meant separating the stuck down images from the original pink background.  I also opted to change the middle image for another the same size.  Making collages on the computer is so much easier.  They squares would have gone together perfectly and I could have changed the background without all the problems I encountered.  I also opted for another square the same size as the outer ones.   The large middle square of my original layout threw the borders out (I measured and tried to get them even without success).