Now days google is in front sheet to penalize websites for any kind of issue hence first check your entire website very carefully. Look its navigation structure, internal linking structure, page content, meta tags and other associated issues. Further going to increase inner page rank use web 2.0 websites and share them into various social media platforms. This can be best way to get an enhanced page rank of your page I Think.
Do link building for internal sites
Submission in web 2.0 website will really be fruitful when you have completed your on page efforts done.