Step 1: Supplies you'll need
Styptic powder or pencil-Powder form is easier to use than to try and apply a pencil to your squirming dog's foot.
Nail file-same kind you use on your own nails.
dog treats-commercial treats, string cheese, hot dog bits, whatever your dog likes and you can dole out in small portions.
Step 2: Acclimate dog to having his feet touched
The first thing we do is acclimate the dog to having his feet touched. With your dog sitting next to you (easiest to do if you are sitting on the floor), touch one of his feet lightly and praise him in a calm voice. Give him a treat.
If your dog doesn't mind this touch, pick up his foot as you praise him and give him a treat. If your dog does mind, stick with lightly touching each foot until you can touch them without him even noticing. Continue to treat after each touch. This first session, end on a happy note before your dog gets tired of you touching his feet, probably 10-20 treats-worth.
After a few session (the number will vary depending on your dog), you should be able to pick up and handle each of your dogs feet. When you can do this, you are ready for the next step.