How to Trim / Cut Dog Nails
*If you’re nervous about cutting your dog’s nails, start slow and work into it. *
-Trim just a small amount off the tip of each nail every two weeks or so. Your pup won't even notice that they're shorter! After some time has passed, take out the clippers again for another trimming session. Keep doing this until all four paws are trimmed to appropriate lengths. You can also get your pet used to having their feet handled by giving them treats while playing with them on the floor before starting the actual procedure - make sure not to touch any part but their legs during these interactions though!
Nail trimming is an essential part of dog grooming, and trimmed nails are one clear sign of your dog’s good health and hygiene. Professional groomers will perform the task for squeamish owners, but dog nail trimming is a simple procedure if done correctly.
*If you’re nervous about cutting your dog’s nails, start slow and work into it.*
Here's more fantastic info from @DogPsychology101