Woorank poor score


Well-known member
I get a poor woorank score on my forum:
Title: Missing
Meta description and keywords: Missing
Headings: all in 0 (h1, h2, etc)
Text/HTML ratio 0%
XML Sitemaps: Missing
Language Declared: Missing
Detected: Missing
Doctype: Missing
Encoding: No
Google Analytics: No (However I have already set my google analytics number on the XF options)
W3C validity: Invalid(3 errors, 4 warnings)
Microformats: Missing
Dublin Core: Missing
Geo Meta Tags: Missing

I would like to know how can I improve this results