Being a Community Contributer in the Africa Project

I think I am not a community contributer in this Africa project, and we almost fight every time when we are doing this project.(not really fight, but just like talking fight.) Because I am a new student in school, and I am not actually use to the technology things and some of the programs......., so sometimes I screwed up or mess up some important messages for the project, then Mathilde will start getting angry and mad, and some other things that are related to "angry." I think some part it is my fault, but some part is her fault, because she is a old student in the school(not talking about her age), and she knows almost everything about the school(i think so). But the part that is my fault is I sometimes screw up things, and not paying attention to her when she is talking, also didn't give 100% in this project(I'd only give like 80% in this project), and sometimes I didn't explain things properly to Mathilde, so she doesn't understand what am I talking about. But some how she didn't explain some of the things properly either, so we both have some things to improve, then we can be a community contributer too.