I think I made it clear how much I age
I don't know what you are trying to say, but it could be "I think I have made it clear how much I have aged".
Pope of the Dictionary.com Forum
Don't you age like most people? No more or less?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.