how to solve a Rubik's cube(4)...FINISH

step no 7:
SOLVE THE TOP CORNERS.
Hold the cube with red( could be any face) in front, do U until the upper front right corner needs to be flipped is in the place(although not precisely-in the same colour position).then do


Ri Di R D
do this either two or four times until the front right corner is exactly in the place.
then still with red face in front do
U
until another corner appears in the front right position, then repeat the steps.
when all the corners have been flipped, just turn the layer to solve the cube.
FINISH!!!