twinsmomma23

hi! im kinda new to the board i have posted once and in case you didnt read my other post let me explain. i have twin boys who turned 3 last month. they are sweet loving little boys but lately im having a lot of problems with one of them. he gets very violent lately. he hits me, his brother and even his father on occasion. i have caught him sitting on his brothers face basically smothering him. i tried to explain why this was a bad idea and how he could really hurt his brother but he pretty much laughed it off and he did it again shortly later. he even called me a b***h because i took 1 of his toys off of him. he knows i have a bad knee and he used to try to kiss it and make it better when i would bump it or anything. even when a piece of cloth falls on it it causes excruciating pain and makes me cry. lately hes been hitting me knee just to see me cry then laughs about it. i seen a post on here about a behavior and consequences chart and i was thinking about making 1 but i wasnt sure about how to go about it and if it would even be appropriate for my situation and their ages so i was looking for advice. can someone give me some ideas of different consequences for different behaviors and maybe a behavior rewards chart for when they are good? i already do a sticker chart where if they get 20 stickers for doing good things then we get to do whatever they want. usually we wind up going to chuck e cheese or what not. so does anyone have any ideas? im not even sure if this kind of chart would be good for their age but i figured if we could do a sticker chart and make it work we could probably do a behavior consequences chart. any ideas would be greatly appreciated and thank you for taking the time to read my long boring post lol.