I don't want to propose to my gf on christmas day or her birthday
Do you feel pressured to do it on one of those days? Any reason why?
Because these are not special days to me. I want to do it my own day.
It's fine to make your proposal unique like that. Christmas and birthday are cliche proposal days.
By doing it my own way I can show my love and she's going to love my uniqueness.
That sounds really thoughtful of you! Do you have any idea how you want to propose if you don't even know the date yet?