Miller,
i think that was me w/ the coffee grounds on my Panther.
but your Rhino looks much better.
i think you have refined the technique considerably!
i think mine needs some paint or more glue/water
to get a better 'slurry'. mine came out a bit grainy,
which was good for hiding build imperfections, but not as good
for overall 'mudding'.
can you give us an idea of the ratios of glue, water, paint?
(and coffee brand!)
great work,
ed.