You can still have a sex life and likely still get erections. Your testicles may atrophy after a long enough period of time. If you lose the ability to ejaculate, then yes they will atrophy over time. You won't necessarily get fat. I never did. Some fat might redistribute. But that's a relatively low dose still.
As for how you look. I dunno. You might just get nicer skin and end up looking like a younger guy. In my experience (and again I take a more extreme regimen with higher E dosages), I looked like a more attractive guy around 6 months to a year. There was a time people at bars would jokingly ask if I was in a boy band and compliment my looks. But somewhere between a year to a year and a half I started to look more and more feminine where strangers started suddenly gendering me female.