Hi! Can the Photoshop experts help me here, Please!

Hey guys!

I'm in love with the FireFox OS and its Ui, I'm not to great at Photoshop but I've been trying to re-create this background from FireFox OS;

Fx_os_icons_medium

via s7.postimg.org

So far this is what I've got, can someone please help me complete it, also let me know how you managed to do it, I've got CS6 on Windows 7, thanks!.

Stage_2_actual_2_medium

via s8.postimg.org

Also if you could someone increase the res to 1080 someone LOL I'd be really grateful, thanks!!!!