Looks good! Never used the HireBee theme so I can't comment really on the exact changes / work you've done, however I can give you some style pointers
I would enclose your content in a max-width container of sat 1310px or about there.
I have a 2560x1440 monitor and the site doesn't look that great in full screen due to it wanting to use the whole width.
I've attached some screen shots below to show what I mean and a couple of suggestions
When you go to : http://www.freelancespecialisten.nl/opdrachten/
you can see that this page content has a width that is not full screen, your front page should match this.
Good work - hope the above pointers help