I was recently put in charge of a project to be completed by myself and another employee. I'm having some trouble working with him, because he keeps making decisions about how the project should go and then does things without consulting me. When I meet with him to try to get us back on the same page, he frequently talks over me, and I come out of the meetings feeling unsure if we've communicated successfully.
I have more expertise in this area, but he's older than me (and I look younger than I am) and he's been at the company longer than me. How can I convince him I'm worth listening to?