So how about, you go to the future, look up a museum of your time, then just go and be yourself, like the people who do similar in museums now of the past.
Either way though, unless time travel has become widespread in the future, you wouldn't be outed, people would just straight think you're a bit odd. There's people now who straight up claim to be time travellers and we're just like, OK mate, suuuure.
You may look more than a bit odd if you go to the past and someone notices the phone you forgot to remove from your jean pocket. Or you start making predictions like Nostradamus that are all accurate.
I think even then people are too skeptical. I could stand in Trafalgar square and start levitating and everyone will be like "Well done, clever trick!"