Practice, practice, practice. Be patient with your stones, it's taken a good 25 knives for mine to really smooth out. Knowing that ahead of time will save a lot of frustration. You are not going to get "wicked edges" on your first knives, the stones are just too coarse. They'll get sharp, mind you, but the more you use the stones the better they'll get.
Learn to recognize what it means to reach the apex of the edge. Get yourself a good 10X loupe and check the edge as you move through the stones. Until you learn to recognize when you've reached the edge of the blade you'll never get sharp edges. Very important, and it also takes practice to develop the eye for it.
Make sure the knife is tightly clamped and straight. If it's not straight you'll get uneven bevels. That should get you started. Vist the WE forums at their website if you have questions, they're real helpful over there. Remember, if you stick with it, let the stones wear in and be aware of what is happening on the edge you will get super sharp knives. Scary sharp. I've been very, very pleased with this product.