Extend existing Module.

There is an existing module which must enhanced. [login to view URL] (Drupal 7) Saving Screencaptures to an core image field. The module creates his own image field, but I want the screenshots saved in an core image field. Making Full Page screenshots. The module makes screenshots in "Full HD" solutions. We want an Option to make a "Full Page + Full HD Screenshot". Needs to be discussed, how this can be implemented, Invoke Screen captures via rules integration. We need rules integration to fire a screenshot - when a new node of an content type with an link field is added. - refreshing a sccreenshot We provide a development enviroment with installed phantomjs. Development and test should be done there. You provide a patch for the existing module.