DOF looks to be shallow since the back of the top edges are a little out of focus, but without shooting details (aperature, SS, etc) it's hard to tell. Also, it looks like the focus point is on the front face of the dice and with a wide aperature, that will cause the OOF at the back edges. You proably need a smaller aperature to get the DOF right.
Did you use a flash or just a light set up to the left? The shadow would indicate a light source to the left of the dice. Try multiple lights to even the shodows out.
Colin