Most important is to move properly for your breed. Don't follow the crowd.
To refresh on the basics of moving your dog in the ring, listen to Episode 3 on PureDogTalk.
In episode 3, we covered 1, 2, 3, go..... and how to line up your dog with the judge. The judge wants to see your dog's rear, not yours.
To improve movement, you need to see what you can't from the end of your leash.
How your dog is moving is one factor. How the two of you move together, is another story.
If your dog is crabbing or sidewinding, try slowing down or re-positioning the collar higher on the neck.
If the front is flailing and flopping, you may have too tight of a leash or holding the dog's head to high - lower your hand and let the dogs head down.
Reach and Drive is not correct in every breed standard. While an Afghan floating around the ring is gorgeous to watch, it's difficult to achieve with a Bulldog.
Again, video tape is your friend.
Laura covers different collars and leashes in this episode. Sometimes a metal chain bothers a dog with sensitive hearing, and a simple switch to a soft choke solves the problem.
Experiment with options to see how your dog performs.