How Do You Make This Type Of Screenshot?

I could give you the basics.

Go to avalanche, to the lift room, you'll see too little lines, they're in the pic too, you put what you want on them,, put juicy i think it is, throw a flare, or a deployable cover,
go into theater, if you look at it in the right angle, you should get this effect.

 

yea, what she said.

 

Fix'd

Go with what Donii said. You may also want to try the Blackout Sky effect, it has similar results.

 

he said it was a joke, and he does it all the time to bug people, thanks though,
And the blackout is all blurry and it doesnt look as good.

 

Althought she is somewhat right, here is the ANSWER is
YouTube - Halo 3 Screenshot Tutorial Word Writing