Well as you can see my plant is growing straight into the sun

Anyway my question is, how far can I cut it back without killing it?
Here it is.
[url=https://imageshack.us][img]https://img372.imageshack.us/img372/1774/basilplant1sf1.jpg[/img][/url]
Here's another pic next to my Supermodel

[url=https://imageshack.us][img]https://img458.imageshack.us/img458/4676/basilplant2sc4.jpg[/img][/url]
He he... I want to chop the sucker down but I don't want to kill it. Advice Please??
