I am an honest and plain spoken person who is considered by many to be blunt espeically on the subject of blogs and how they are presented.
1. The blog URL and Title are the same. This is a good but there is no Tagline. You need an effective tagline (no more than 67 characters including spaces) and it must contain key word branding for the blog.
Example: Southwest and Santa Fe Baba Yaga poetry, essays and art events
2. Separate your About page into three sections:
About the blogger
Expand the biograpgical information please.
About the blog
Invitation to Contribute
3. You are featuring authors so you can consider these ideas and see whether or not they are suitable:
(a) Use an Authors widget in the sidebar so readers can click it and find all entires by a specific author.
(b) Use an Author's Grid widget to display the avatars of all your blog’s authors, which link to a list of posts they’ve each written.
4. Would you conside changing to another theme? I think Coraline which ypu can also set up in 3 columns like you have on Garland now. It has a custom image header option, nice typography, and some nice features. Ypou can view and demo it here http://theme.wordpress.com/themes/