This is a simple way to carve rose from a wood with rotary tool.
Instructable contains two videos, first one is made from round, second one from square wood piece.
Step 1: Carve..
For rough shaping i used Dremel shaping disk, it can be used for sanding and cutting.
Main idea is to start carving from the middle, and to use spear shaped diamond tip as a "drill".
I use high speed when carving, wood might burn a bit, but burnt surface is easy to sand away afterwards with that same bit using lower rpm.
Finally little burning with torch and varnish to the surface.