The waves and groove around them were cut with a 90° v-bit.
The shell cutout was done with a 1/16" endmill because of some tight corners. I used a real sea shell, drew around its perimeter with pencil, scanned it, then traced the bmp in VCarve.
Ripples were cut with a 60° v-bit at three different depths to similate real ripples.
Border texture was done with a 1/8" ball nose endmill.
The final cutout of the top was done with a 1/4" endmill.
For the base of the box, I used the outline of the top to create a pattern to use on my bandsaw; I wasn't trying to get an exact match, just something close.
