Welcome to the forum.
Passing? It depends on a lot of factors and many of them are not related to your face. Yes your face will most likely change with HRT especially if you epilate/laser/electro your beard, shape your eye brows, etc. Whether it is passable will be up to you. Sadly there are a number of trans women who look very much like genetic women who - for whatever reason - believe they do not pass.
HRT is not a magic drug. For example, it will not change underlying bone structures (such as your chin, brow, forehead) or nose shape/size. It will feminise your skin, face and body to an extent but being able to present as and be seen as female is about a lot more than the HRT and your looks.