Please Help! Is my cage set up right? What are these red markings on my BP?

[Slim]

I watched a video on youtube that said to put the rat in a pillow case and swing it around so its dizzy and dont hurt the snake?

This is an incredibly BAD idea. Do not put a freaked out rat anywhere near your snake. THAT'S how snakes get hurt.

Honestly, your snake doesn't need any help killing rats. Your snake is actually designed to do it.