Enter a signature in the form of [url=http://www.woodwindforum.com/forum/index.php?members/YOURNAME.NUMBER/#info]My gear![/url] and click the "Save Changes" button.
* Gandalfe, Helen, and I had a conversation on this. It'd be nice (not required, but nice) if you enter in some info about what you're good at, particularly if you can put down something like, "Misc. woodwind history," as I did, or note that you're an instrument repair person, or whatever.
So, anyhow, while the above is definitely neater (both in the sense of "interesting" and in the sense of "not cluttering your post"), it's a bunch of steps. There is allegedly a way to eliminate the last three-ish steps, but the documentation I'm currently finding is very outdated and doesn't apply to our version of Xenforo.
I'll keep this on the back burner for a little bit. Until I find something better, if you have any problems doing the above, start a Conversation ("private message") with me or send me an e-mail and I'll get you set up.