help diagnose my plant. two of the edges look burn...

What nutes are you giving and what soil are you using? keep in mind that every plant is different even if from the same strain, what one likes the other might hate. Also keep in mind that auto's need about half the dosage of a photo-period but to be honest, I would have waited another week to start feeding, more if it's a rich soil. I'm no expert by any means but what I normally like to do is make sure my PH, temps and soil moisture are in check then look at the nutrients. If it's looking like deficiency then try to identify what type of deficiency and supplement. If it's burn (which is what I am seeing) then no nutes for a week or until new growth looks healthy. Don't freak out though cos it isn't terrible looking :) Hope this helps and good luck with your grow!