What do my friends want?

Recently we had an argument over a project where we had to do designs. I aid that I would do them but then we didn't have time because I was doing the speech and so my friends did the design. The next day I had time so I drew over the design and when my friend found out they got really mad and dragged all their other friends into it. I can understand why they got mad and I apologised but they won't tell me what they want from me. I said I was sorry and they said that it wasn't enough and that I needed to do more to make up but they won't tell me what. It's not just that the girl who dragged everyone in doesn't like me and I'm not saying that's why this argument happened I'm just saying that she doesn't like me and its causing a few problems. She's never hugged me and she'll be nice if she wants something from me but then she won't care about me at all if she doesn't. And she won't listen to me either. She used to hang out with a different group of friends until she recently came to our group of friends. Since then its felt like she's trying to stop them from liking me. They've had meet ups and sleepovers and gathering with out me and I feel a bit left out. All she can say about me is bad stuff and she doesn't even look me in the eye when she talks to me and then she goes and tells me I'm rude for drawing over someone else's work which I know it was but I find a little hypocritical. Another thing that happened w a friend got stroppy over something I said because she took it the wrong way. When she started crying everyone just gathered round her and didn't even decide to listen to my side even if it was wrong apt hey just judged me. I hit another girl for a joke and she said it really hurt so i apologized. then the next day she elbowed me in the face which was by accident and she apologized so i understand. but then she was like next person who screams gets a slap and i said ahh really quietly like just speaking as a joke and she slapped me really hard across the face which hurt and left a mark. the friend who doesnt like me said that friends should treat their friends nicely and she deliberatley said it loud enough so that i could hear and i know i did wrong but i apologized and i dont know what they want me to do. Sorry to sound like a stuck up snob if I sound like one but I genuinely don't know what they want me to do. I've forgiven them when they apologise so I don't know what to do.