Is this OK that I use "doctor (or doctorate) candidate" as appellation on my business card? Is this correct to call my self &quot;Doctor of engineering CANDIDATE&quot; on my business card?
If it's not improper, what should I use instead of doctorate candidate?
Background:
I'm a college student in master's course and will graduate this summer, then go on to a doctoral course.
So, I'll become the student who has master's degree and also become the student who tries to work toward a doctorate's degree.
I will have business cards available after entering the doctorate course.

*This is my first time to have business cards available.
*I was looking for many same questions, but anything didn't fit my background.
Before graduating with an MA (and assuming the BE is a requirement for your current program):

Emma, B.E.
graduate student at University X, program Y

After graduating:

Emma, M.E.

After acceptance into the PhD program:

Emma, M.E.
PhD student at University X, program Y

The exact titles (e.g. M.E. or MA) depend on country and institution.
By the way, I've maybe used four business cards in the last ten years, and I probably might as well not have. (It's nice to read your name on a piece of high-quality cardboard, though.)