Remove the screws on the bumper.

Now remove the cover that held the bumper in place. You will need to move it around a bit around the FlexiArm (Top left in the picture)

When moving it around, do not bend it too much. You can permanently deform it.

Once you have removed the cover of the bumper, make sure to disconnect the connector that connects the light in the bumper to the motherboard.

Detach it before pulling the bumper off, as you could tear the cables.