In this step, don't fold back the logic board to more than a 100° angle. Some connectors are still attached to it and can be damaged.

Lifting from the top edge, swing the logic board up until it's roughly perpendicular to the iPad.

Prop the board up securely so it doesn't move while you work. (Don't use anything metallic or conductive.)

You can use a small rubber band to keep the logic board in place.