The 1st house is the most visible house, the first impression of a person, it shows appearance, behavior, style, instinctive reaction to the surrounding world. The first thing we see is the appearance. And here Uranus cannot go unnoticed. Uranus, of course, gives something unconventional, both in the body of a person and in the style and manner of dressing. Therefore, there may be disproportionate body structure, asymmetry in the face (for example, different colored eyes or unusual eyes), abnormal growth, anomalies in the body (atavism), a bouncing gait.
The style of clothing can be extravagant, provocative, but this is not necessary. For example, if the ascendant is in an Earth Sign, they love classic clothes, but there is some kind of highlight - an unusual neckline, asymmetric cut, or memorable accessories, unusual jewelry. The person may constantly change their hair color, experiment. Or this goes up to a certain point, when, for example, in progressions and directions, Uranus comes out of the 1st house. There may also be a love for piercings or tattoos.
That is, there is a desire to stand out, to be different from others, and, of course, a love for the unconventional, and sometimes even avant-garde and "futuristic" style of dress.
This is a very independent person with their own vision. There may be impulsive behavior, and sometimes unexpectedly for themselves. For example, a person is sitting in a company, suddenly some insight or inspiration happened, they abruptly stood up and ran away, without saying goodbye to anyone.
Such a person cannot live peacefully "like everyone else", they strive to fill their life with something interesting and unusual. Therefore, they are often interested in unusual things. They mature quickly, both physically and mentally.
They may be a "black sheep" in society - their point of view, behavior may differ from others. They are eternally striving for an unattainable ideal.
Births... Such a person may be born quickly, unexpectedly, in an unconventional environment.