Whatever cutters and method you choose always do the front ones first, they are the most fiddly, there's more of them and it's best to get them done before your piglet loses patience with you and decides to start complaining/wriggling/nipping ( they all have their own preferred method of letting you know they're NOT enjoying themselves) and making the job twice as hard. Good luck!
It does get easier with practice so don't despair if your piglets are not terribly co-operative. If you can sit by a window so that the light shines though their claws showing the shadow of the quick you're less likely to catch it ( little and often is best).