I decided to start my first blog ever with my new site www.missionenvironment.com, the blog is at www.missionenvironment.com/blog. I used the only green theme I could find, but I am growing to hate it. Do you think changing to a better header would fix this theme or should I find a new one completely?
Even if you can't figure that at first, changing the header for a theme can CHANGE mostly everything, including the way your blog or website is perceived. Go ahead and try, the theme is a nice and clean one. Good luck,
If you feel that you need a change of look then try some free themes. http://www.wpthemesfree.com/ http://themes.wordpress.net/ http://rockinthemes.com/free-wordpress-themes/ etc... If you are not satisfied even with these free ones then go for a paid themes.
If you like the theme layout you can easily edit the images and stylesheet included in the theme to have it match your tastes.