First of all, this section is about template design and coding, so your question should be posted in the "Market Your Blog" section. Next time choose section carefully.
As for why your blog still unranked is because Google has its own algorithm in determining your page rank. The common approach is to write a good content of your blog, market your blog, interact with your blogger friend so you can gain "relevant backlinks", which will boost your page rank if it is done well.
