To be brutally honest about all this, I really don't think I'm educated/experienced enough in either architecture or games to be writing this blog [...]
There are much less knowledgeable people wrinting about topics. Your blog is a interesting read - I don't care if you finished a game yet or not. You observer things, you think about your observations and you share your thoughts. That is alright, and it's on the reader to decide if this is useful for them or not.
Haajo is right + if you wait to be good to do something you will never get good at it, just do it, make mistake, improve, learn ... So keep your blog update as often as possible!
That's how we get experience, do be too modest the more quickly you brag the more quickly someone intelligent will prove you wrong AND you will learn and that's the point
Ok this is subject to your personality, but some people are very passionate about what they do, feel, believe without thinking much about themselves.
DO!
LEARN!
IMPROVE!