During reassembly be very, VERY careful when pressing the display assembly into the rear frame. Many displays are damaged because the phone was dropped and the rear frame hit a hard surface. The rear frame may be slightly bent or out of shape. When pressing the new display in place it might not fit easily and applying even light pressure can BREAK the new display assembly (I know from experience). Supper lame to get literally to the very last step and crack the new display. %&*#!!!
I would skip Step 24. Why would you remove the very delicate cable assembly from the LCD shield plate only to reattach it to the same shield plate after fastening the shield plate to your new display assembly...