then you should really sit down with your Master and find out his expectations first. What set rules and regulations you have. once you lay this down you can begin to discuss punishments to fit each situation. Some for deliberately breaking a rule and some for loss of control.each situation is unique and requires consideration before punishment. Every dom/sub couple is different.
Did you not set ground rules and limits and expectations before accepting His collar? Or are you still in the process?
As far as punishments go are you looking more for physical, humiliation, or demeaning tasks?
also a system should not always be based on punishments and crimes, it should also be based on the reward system as well for all of your accomplishments.