You're absolutely on the right track, keep it up. Go to Pixelsource.org and get the BU templates instead of using the ones from EO.
Look forward to seeing more.
The gold plate's lines and colors aren't bad, but the shading does leave something to be desired, it seems a bit more suited for a matte clothe than shiny metal. In that same thought, I would suggest trying out some clothes for your next idea.
All you need to improve your skill level is experience!