Writing about Writing?

Since I started taking my writing seriously back in 2003, I’ve only published six stories (but gotten a heck of a lot of rejection slips), so I’m not sure I have a lot of writerly cred; at the same time, though, I feel like I’ve learned at least a little bit, and have some insight into how stories work and how good writing, in general, is done.

So my question to you all is, is it plausible for me to think that I have enough credibility as a writer to write a series of essays about writing technique, and have them taken seriously?