Here, I hope this helps...

Make your white face look like this:


HOWEVER. Once your white face looks like that you have to check the sides to see that the same colors are on the same side. (In the screen caps, I moved the center row, so the center cube is the same color as the corner cubes.) In essence, each of your sides should look EXACTLY like my pictures do where your white corners are concerned and where the colored corners that touch the white face are concerned.

Ex 1:
See how this is the green face? The two white corners BOTH have a green color on the side of them. (And like I said, I rotated the middle section so that the center piece is also green.)

Ex 2:
This is the red side... both red corners are adjacent to the white corners.

Ex 3 & 4: (Orange Face) & (Blue Face)