Weight the hook if desired. Not all czech nymphs are weighted
Tie in gold ribbing wire
Tie in scud back at the bend of the hook
Dub the body
Pull scud back over body
Rib body with gold wire and build a small thorax area with wraps of gold wire. Pick out dubbing for legs if desired
You can tie off the ribbing wire in front of the body, tie in some tinsel and wrap that tinsel for the same effect as the wire.