I am having problems potty training my new puppy, any tips?

I am trying to train my puppy using a litter box with “puppy training pads” in it. I recognize his signs of having to go, sniffing, circling, squatting, etc., but when I bring him to the litter box with the pads, he gets very nervous and squirms and tries to jump out. It takes forever for him to poop in it. I am rewarding him, but I don’t think it is working. Any tips?

Related posts:

1. ANy tips of potty training a yorkie puppy during cold weather, my dog refuses to go outside. ?
2. Puppy Behavior Problems - How Proper Puppy Training Techniques Can Help Prevent Big Problems
3. Puppy Training - Potential Problems That You May Encounter
4. How do you correct poor puppy potty training?
5. Enrolling Your Dog With Potty Puppy Training