You asked this same question in an earlier thread. Nothing has changed. Make a tracing on masking, scan it, scale it, draw, print, cut. I posted pics of some of the tracings I made in that thread.
Here is the process (brief overview):
1. use masking paper to trace the shape.
2. measure and scan (or take a picture)
3. scale to size
4. trace (vector)
5. cut sample to ensure fit on plotter
6. create artwork template
7. layout custom artwork
8. apply cut path from step 5.
9. print, lam, cut
10. enjoy
Programs I would use for above
Photoshop
Illustrator
FlexiSign Pro
You could use something different.