Bring your thread up very close to the center again and slide the needle under one spoke. Take your needle and thread back over that spoke again and then go forward under two spokes.
Carry on going back over one spoke and forward under two, working your way around the circle until the spokes are covered and the circle is full. In this picture you can see the finished Raised Spider Web as well.
I think this is a fun stitch with lots of applications. I can see them as flowers or as starfish in an under the sea theme.