The picture on the left is what your cube should look like at this point. Find a edge peace that needs to be put into the top layer.It will either be int the wrong place on the top of the cube on the bottom, one of the sides or on the center layer. If it is on one of the sides or on the bottom Hold the cube so that the spot you are trying to put it in is the front.(facing you).
Know turn the bottom row till the cubelet that you are trying to place int the top row is directly below where it need to be.If the white part of the edge peace you are moving is on the front then do the following.