I hope these pictures show up.

The dark wood on the left is what the light color wood needs to be shaped like. The light wood is mounted on fixtures so it can be turned over for the other side. I see it as drawing straight lines to specific distances, then curves with a radius, fillet the sides and much should be done. But I am not getting the fillet or curved portions to turn out. Also having trouble setting the length of straight edge and degree of taper. Any help would be appreciated.

Tony