Hey hey,
I'm very *very* new to Construct and writing instructions but I tried to follow your example 
rojohound for making a mirrored waterlike surface ( in this thread.
I can for the life of me not figure out how to extend the surface to the entire bottom of the screen. I've tried changing all the numbers, changing the canvas height value to 50+ and adding and instruction to cover the entire lower part of the screen but but then all i get is a stretchy texture and no ripples