Decorated metal box

One of the favorite necklaces I made went on a long trip from Croatia to far Australia so I had to make sure it gets there with as much comfort and safety I could provide.
I have few of this sad, unused metal boxes left and forgotten after we ate all the candies they sheltered, so I decided to find them a new purpose in life and turned them into decorated boxes for jewelry.
I'm a total beginner when it comes to decoupage technique, but this little I know was enough to realize the idea I had in mind.
Here is the result, what do you think?