It’s easier if you have someone to help you - one to hold and then you can cut.
Herd him into a carrier or box and then pick him up from that, wrap him in a towel keeping the foot you need first out and then clip a little off at a time, avoiding the quick. If piggy has black nails if you shine a torch up through the nail you can usually see the quick. If you have any concerns about doing it yourself though then it’s safest to ask a vet nurse to do it for you
Herd him into a carrier or box and then pick him up from that, wrap him in a towel keeping the foot you need first out and then clip a little off at a time, avoiding the quick. If piggy has black nails if you shine a torch up through the nail you can usually see the quick. If you have any concerns about doing it yourself though then it’s safest to ask a vet nurse to do it for you