If this is your first interface and it wasn't off a tutorial then i think its pretty damned good for your first.

Main thing i don't like is the bit (picture?) in the back, it has lots of detail where as the rest of the image does not, it doesn't match. Im liking the orb nice detail on it.

Give it more detail and change the backing and it would be quite nice, not very original though.

Keep it up!