cutting

[icey]

the pain is part of the whole thing.

cutting should never be used for pain play, cutting deep enough without going too do will draw plenty of blood and gently squeezing and manipulating the open 'wounds' will draw more, it will begin to bleed slowly to start with so you shouldnt be impatient and go deeper.
razors and scalpels draw more blood although they take even longer for the bleeding to start, and the only 'pain' that you should feel when cutting is one like or similar to that of a paper cut.
dont be afraid to put some mild pressure on the blade it's actually safer to go slightly deep rather than just scratching the surface, less likely to 'tear' especially if you use a knife at all,always make sure its razor sharp and good quality blades.
as for your chest, if you try that..are you female? if you are try keeping the cut fairly high up, even small breasts are fairly heavy and (no offence) but in most positions gravity makes them drop a little as you know the weight (if the cuts low say a good halfway down or lower) will drag down and open the wound a little more, same with the stomach (it doesnt have to be large) unless you are really lucky and have a perfectly flat toned stomach.
and never cut thinskinned areas.
im NOT an expert and not pretending to be but i have played with knifes/razors etc many many times both for bloodsports and permenant scarring and have learned quite a bit from both a lot of research and experience,
always keep in mind that no matter how light you cut whether you want scarring, permenant or not there's always a possibility that can happen regardless of what you practice.

sorry lecture over!