Not knowing anything about you and your pain tolerance perhaps start with this simple set of introduction tests.
Find 4 regular clothes pegs.
Begin by attaching a peg to the webbing between your fingers and thumb on one hand. Start at the thumb and first finger then wait 60 seconds before adding the next one. When they are all on wait to see how long you can stand the pain up to a maximum of 20 minutes then remove all the pegs.
Next attach the same 4 pegs to your tits with one on each nipple, attach the nipples last and again wait to see how long you can go before you remove them.
Finally attach the 4 pegs to your labia, 2 each side and time how long you can keep them on.
Report back with the times for each test, hand, tits, labia along with a description of how these tests went and how they made you feel.