Start with your feet together and your hands by your sides. In time with the music, pick up your right foot and tap it in front of you, and hop forward on your left foot at the same time. Tap your right foot in front of your and hop forward again on your left foot. It should look like half a stride where you're only stepping forward with your right foot instead of alternating with the right and left feet. The rhythm will be like this: step-hop, step-hop.
Put your feet together. Hop forward and to the left, hop forward and to the right, hop forward and to the left. Remember to keep your feet together as you do all the hops.
Repeat step one by tapping in front of you with your right foot and hopping forward on your left. Here's where you can start adding your own stuff. Once you have the general Crip Walk dance steps down, you can start adding more hops with both your feet, tap in front of you as well as behind you, cross you feet and uncross them and whatever moves you can think of. As long as you stay with the rhythm of the music and the general Crip Walk, there's lots of room for improvisation.