Mirror modifier

Thank-you in advance for your most appreciated help. I am very new to 3d modeling actually first time. I can’t seem to keep my mirror modifier to stay active all the way through a character block build. I can’t find any switch to flip to make it all better :-p.

So you are saying that mirror modifier is working properly in the beginning right? Is mirror modifier still there? If not you probably “Applied” it. Or did you move object center at all by accident?

Yes, I was applying it but then i tried doing it without applying and it worked until I extruded a section then it seemed I lost it there as well.

Is the object center on the parent mesh where I started the mirror modifier? I dont think I did anything to that, wasnt quiet sure what that was.