It is always difficult for teenagers to communicate with their parents,so there are some advices that may help you.
First you should be an active participant.If you find something that your parents aren't doing well,you should point it out to tell them.It is wrong to suppress it,and you should express your own ideas.
Secondly,you should be modest to accept what your parents have said,and praise them for their advice.Because nothing is absolutely right in this world,we should tolerant their shortcomings.
Finally we will find it is easy to communicate with your parents