Finally, I received my 2 Evergreen .60 plasti card in. I drew out the shape I wanted and made sure it was long enough and duplicated each peace. So, the tail doesn't feel so thin. Then I used my band saw to cut it out. I then took the wide piece and cut it in half and did some sanding to get it even as possible. I then glue the two halves to the small tail section. The tail basically looks like a double wedge shape or object.

Now it's minor sanding and then adding green stuff or my favorite, GW's Liquid Green to smooth out the surface. I just need to do few things before gluing it to the rear of my Centauri Dreadnought.