Congrats Hun,
Please remember a few things from this point on:
-be patient, you will see a lot of almost immediate results and then after a few months you feel a little stalled, you won't be, that's the point when your body and face will slowly morph and show the most impressive results... 2 year journey!
-mood changes, your mood and even your personality may change slightly, enjoy the ride and don't freak out if you feel a little too emotional here and there

particularly true at the beginning months of HRT.
-monitor yourself and how you feel, if anything in your lifestyle changes, see how it affects you hormonally and ask for the medical professional in charge to consider this and make the changes needed.
that's it! Congrats!