The inventory items and overall layout makes me want to poke it cus it's shiny, but the overal ui design feels like it's striving for another style, it feels more steampunky than fantasy'ish if you get what I mean, Don't know what sort of game it will be in the end, but if it's a fantasy one I would loosen up the ui some, make more organic elements like wooden frames and buttons with metal ornaments and such, other than that it's a kick-azz mochup! :)

I took the speedball style faces as references, You can see more in other mockups or a Daniel Craig with this style :P

http://www.pixeljoint.com/pixelart/73785.htm

http://www.pixeljoint.com/pixelart/73821.htm

the last 2 face icons is a player from speedball by bitmap brothers?

This mockup is endless lol.

 Love how the objects in the inventory have different sizes.

This looks like, so good.