A good way to get a highly credible link is to contact your old university, tell them your story and they may decide to feature you on their news section (promo

A good way to get a highly credible link is to contact your old university, tell them your story and they may decide to feature you on their news section (promoting enterprise is a big thing for most universities now). Worked for me, within a month of being featured on my uni's news page we were top of google page rank for 'fair trade jewellery' - of course you need to do everything else right too.