Good ? Stock Considerations

Obviously this brief is massively impacted from the thought process behing printing techniques and finishes, so within my design work there needs to be clear considerations constantly throughout in order to maximise the impact.

These designs are based around the original cover but the stock changed to correspond metallic foil. Giving the whole piece are collective feel, quality from first glance. In order to achieve this, I need to propose the appropriate solution and mock up to visualise the idea.