Blue arrows are cloud directions and the blue bars are the cutoff angles.
The build is ontop of bridge, including the reflects. (DO NOT build on the wooden planks.)
Reflects are a skinny rectangle like I have presented.
Pylon should say its boosting 19 towers total if done right.
4 summoners with 2 monk, 2 app, and 2 huntress guardian pets all sitting directly under bridge. (the 4th summoner I like to use imp pet and djinnlet pet for auto heals on auras and he sits behind the pylon.)