looking at your meta tags, i would say 2 things.
Most important tag by far is page title, get relevant keywords in here.
Keywords and description tags are much less important for ranking, but useful for the description, and in here focus not necessarily on single keywords but key phrases or groups of words, so, for example authors full name is a single keyword
Obviously relevant page content is helpful too.
I can recommend a very good book if you are interested in SEO.
'The Art of SEO' by Enge et al. published by O'Reilly
(It has a picture of a hummingbird on the front cover)