Welcome here. You are here to solve the top face.
You should have the white layer in the bottom.
Now look at the top face and match your states below.State 1
If no corner Cubes are yellow on the top face, you must have yellow left corner or left face as shown.State 2
If one corner Cube is yellow match your top face as shown and do the sequence below.State 3
If any two corner Cubes are yellow don’t worry about their position. You MUST match the front face with a yellow left corner as shown Do this sequence 1, 2 or 3 times to achieve a complete yellow top face. After each sequence, orient the Rubik’s Cube to REMATCH the top face to the appropriate state and repeat the sequence until all the corners are yellow
If your cube look like the one below, you can go to the next step.Next -->