Curved Lithophane Case with 9V Battery Compartment

After I printed the Curved Lithophane Case from FadedDreamz, I thought to make it cableless with a 9V battery compartment. (I use a 12V LED Strip from Hobbyking and a 9V battery works fine.)
So I took two designs to Tinkercad and this came out.

PS: Just drill a hole anywere you wish for a switch.

Here are the "dimensions" from the orginal Case from FadedDreamz.

Lithophane size in slicer:
X: 70.42
Y: 16.70
Z: 99.75

Print settings:
Nozzle: 0.40
Layer Height: 0.20
Supports: Yes (