the stream base are the patches of water weed that will
become embedded into the Aqua Magic (I hope)

That tree is only an average 'decent size' tree standing some
245 mm from it's roots, or just over 60 foot high. Trees of
over 80 feet are quite common with giants getting to 100 feet,
or more. You rarely see good size trees on 4 mm scale layouts,
or dioramas.
Sorry Alex, forget our competition (Challenge) 1st May start as
only by starting early will I have the time to get finished by the
end of June.
Geoff T.