As the paten/shape on the side of your door is so large and dominant. It will be the first thing that you will see when you look at the case from the side or at an angle.
If you intent is to make this case you look refined and sophisticated.
Then I would be cautious of not making it look to busy/ to detailed, to much or to bright color.
Most, if not all refined and sophisticated things are simple, easy on the eyes and give you that feeling of WoW, but only when you have that feeling of being calm, at ease with it.
If there is just to much detail to look at, your brain is constantly looking at it, this can give you the feeling of being uneasy/ even an awkward feeling.

Don't have everything on show and in your face like, make people interested enough so they want to look at it closer, and by looking, the case will reveal it's secrets.

When that happens, you have reached "sophistication"

Just my take on it.