  We develop a systematic semiclassical approximation scheme for quantum Hall
skyrmions near filling factors $\nu = {1 \over 2n+1}$, which is exact in the
long wavelength limit. We construct a coherent state basis for the Hilbert
space of Chern-Simons gauge fields and composite bosons with spin. These states
are projected to the physical gauge invariant subspace and their wavefunctions
explicitly evaluated. The lowest Landau level (LLL) condition is shown to be
equivalent to an analyticity condition on the parameters.
  The matrix elements of physical observables between these states are shown to
be calculable in the limit of small amplitude long wavelength density
fluctuations. The electric charge density is shown to be proportional to the
toplological charge density if and only if the LLL condition is satisfied.
  We then show that these states themselves form a generalised coherent state
basis, parameterised by the values of physical observables. The theory can
therefore be written in terms of these gauge invariant bosonic fields in the
long wavelength regime. The off diagonal matrix elements of observables in
these coherent states are computed and shown to vanish in the long wavelength
limit. Thus we are able to prove that the classical description of the skyrmion
is exact in the limit of large skyrmions.
