Car wrapping vinyl is amazing to work with. Just make sure that you have a heat gun with good temperature settings and a decently clean area to work.
My son’s old bike was the first vinyl wrap I did.
I watched tons of car wrapping videos and thought how hard can it be to wrap a bike frame if people do it to cars all the time. I was definitely proven wrong.
A car would be a great first project. It has large mostly flat surfaces and most of all it doesn’t move when you push the vinyl against it and stretch it to follow the shape.
The more curves and roundings there are the more difficult it gets. And aside from boxes on cargo bikes there is nothing that’s not rounded on a bike.
Here’s some pictures of my most favorite wrap:
That was my daughter’s last bike. When she grew out of it I used the rest of the vinyl to wrap the current one and it was a lot more difficult to work with vinyl that has been sitting on the shelf for 2 years.