  The effect of dipolar orientation with respect to the soliton plane on the
physics of two-dimensional bright solitons in dipolar Bose-Einstein condensates
is discussed. Previous studies on such a soliton involved dipoles either
perpendicular or parallel to the condensate-plane. The tilting angle
constitutes an additional tuning parameter, which help us to control the
in-plane anisotropy of the soliton as well as provides access to previously
disregarded regimes of interaction parameters for soliton stability. In
addition, it can be used to drive the condensate into phonon instability
without changing its interaction parameters or trap geometry. The
phonon-instability in a homogeneous 2D condensate of tilted dipoles always
features a transient stripe pattern, which eventually breaks into a metastable
soliton gas. Finally, we demonstrate how a dipolar BEC in a shallow trap can
eventually be turned into a self-trapped matter wave by an adiabatic approach,
involving the tuning of tilting angle.
