• In step 19 & 20 change the ORANGE & RED corners in their correct locations.
• If your Cube matched anyone image from 21 to 28 than follow these steps :-
  21 » 26 » 27
  22 » 26 » 27
  23 » 26 » 27
  24 » 27
  25 » 27
  26 » 27
  27
• Cube states in 26 & 28 images are same.
  You can proceed step 28 except step 26.
• Now steps are :-
  21 » 28
  22 » 28
  23 » 28
  24 » 27
  25 » 27
  27
  28