pull off his head and draw a line where you will cut. Make warm with a hairdryer. This wil make the vinyl softer and easyer to cut.
When the head is soft, get a sharp kitchen knife and make hot with a burner so the knife will go easy into the head. Cut off the top of his head where you drew the line.

Take the Fimo clay and fill his head half full. Make with the clay the noodles and onther decoration and bake in the oven.

Paint the Munny in the colours of choise.I used Uni Posca pencils because it's easy and works best on the vinyl.
put the baked clay in the head.
add the decoration and pour in the glue (for the soup effect).

cut off a piece of bamboo skewer and put put in the noodles

WARNING WARNING WARNING: make sure that the little hole in the neck is closed (you can use clay or glue, but it has to be closed befor you put the glue in)
i was stupid enough to forget it and the glue driped into the body and destroyed the feet.