so its safe to do it yourself then, i think i would be scared.If you are scared, dont do it. Have someone show you how its done, but if you are scared, the dog will read the tension and act out. You are more likely as well to hit the quick if you are nervous.
If your dog has white nails, you can actually see a pink line in the nail. Cut just before you hit the line. You dont want to hit it.
If you do get the quick, once the dog settles down then it will stop bleeding. Quick stop will stop the bleeding quicker, but it does sting. So you only want to use this if you really get the quick (like deep) or if they arent stopping bleeding.
If you have darker nailed dogs, then its usually to the curl in the nail.
But again, if you cant stay calm, ie not get nervous, it is better off if you get someone who knows what they are doing (either a friend or the vet).