I have learned through poor planning that there is a way to gage what might be a good canopy height.
(1) is to know how much room you need to work in the tank. I need a good 10 inches to work under a canopy that is not rolled back or removed.
(2) is to design the Canopy to be 1/3 or so of the height of the stand. This sets up a proportional arraingement around the tank that is almost aesthetically pleasing.
Aquascape? I'm a crypt farmer.
It's a fine line between fishing and standing on the shore looking like an idiot.
That IS an aquascape, it's titled "The Vacant Lot".