might like to practise with an old cerial box and and an old piece of crankcase or some sort of thin alloy .. just to get the feel of it . and a cheap set of hole punches have lasted me well for a lot of years too (just use over a bit of wood or rubber ;))
try not to practise on something you need so it dont matter if you damage it huh we all learn something new with practise widget just ask and it comes mate .
