How to cut Guinea Pig's nails?

I can cut the back paws but for the front paws, my guinea pig will bite me. It will try to pull the paw away and will bite after that. The bite isn't hard and doesn't puncture my skin but if I continue the bite will get harder. The front nails are very sharp and just stepping on my finger can puncture my skin so it's pretty sharp. Can someone please tell me how to cut for my somewhat fearsome guinea pig(it's still cute)?