I'm a 16 year old bigender, born female. Generally in the morning when I'm awake enough I can tell which I am. How I picture my male self isn't too much different than how I look now. I tend to picture him to be slightly taller than my female self, somewhat longer hair (I have an afro), and a curly moustache, but of course without all of the female traits my body has.
During times when my dysphoria gets bad, I tend to picture myself as the same person but in two different bodies, one male, one female. Sort of like clones of each other, but I don't think of us as twin siblings. I'm attracted to both men and women, and notice myself having a lot of fantasies of having sex with the other half. I'm not really overconfident about myself in general, but I would consider myself attractive.
I'm not going to go into detail more than needed, but generally these types of fantasies involve my male side displaying aggressive dominance over my female side, and a lot of focus on the male side's genitals. As a male I'm not very macho per say, just kind of posh. In these cases I literally imagine him as spoiled royalty who believe he's better than everyone else. In the fantasies it's dominance as in "I'm royalty, get down in your knees and worship me you filthy peasant." I don't always feel dominant when male, it's just more often that I have those sorts of thoughts when I am. It think it may be me wishing that I had a penis. Fantasies like that are comforting to me, and they don't occur involuntarily. I don't feel like I'm doing anything wrong by having them, but I'm not sure if this is a normal way to cope with my dysphoria. Is it?
By the way, while I'm saying things like "he", I don't consider us separate people. I like to think of it as two parts of the same person, and it kind of helps me feel at peace to refer to the opposite that way. I don't have different memories for each identity or anything like that.