Create an Animation

I'm looking for someone who can create a motion animation of mobile app design (mockup style). Something like this ... [login to view URL] I'm having everything prepared in Photoshop, so I'll send you the source files with design. All I need is to put everything in motion and create beautiful smooth motions and export it to GIF. It needs to run smooth, with no "chopping" effect. As a result I require also your source files, not just GIF export (so I can export it with different settings) This job requires someone with skills, please send me your references what have You done so far. Thank you.