Use NURBS, or some other way to represent curved surfaces.
Produce a morphing movie using a parametric version of the surfaces
to do three steps of a morphing movie simular to done the
movie Willow.
Include textures to make the effect look good.
<P>
Some help 
can be found
<A HREF=http://biology.ncsa.uiuc.edu/ebt-bin/nph-infosrch/infosrch/SGI_Developer/OpenGL_PG/@ebt-link;cs=fullhtml;pt=24910?target=%25N%15_26278_START_RESTART_N%25#X>
here
</A>.
and
<A HREF=http://www.mat.ucsb.edu/~c.ramakr/articles/dls/nurbs.pdf>
here
</A>