Rotate the Xbox and remove the warranty sticker from the back. Removing this seal and opening the case of the Xbox voids your warranty with Microsoft.

Use a plastic opening tool on the back to pry the top of the case from the bottom. Use an up and out motion to dislodge the clips. There are multiple clips to release on the back and two on the sides.

This step may take up more time than the others, keep prying with the plastic opening tool and when you release one clip, wedge something underneath it so it doesn't close again.