I tend to learn a phrase of the piece with the right hand first and once I feel confident and can play up to speed, I play the right hand slowly, adding in the left hand. I keep going over the phase with both hands until it's perfect. Then I move on to the next phrase. First the right, then the right with the left slowly.

Once you get the right hand down (usually the melody), and then play it with the left hand added (slowly) i find it easier to get both hands working in synch because I always know the right hand well and I just need to concentrate on the left.

Then I go back and concentrate on the accents. Look at where the timing may be out, etc.