I and mom are talking outside our house 哪里错了?

I and mom are talking outside our house 哪里错了?

I and Mom are talking outside our house .
说话人自己的妈妈可以写为Mum或my mum.

Mom and I
第一人称的主语与其它主语并列时，放在最后（and后）

Mou and I