Best thing for that is getting a scalpel from a hobby/model shop. Local one sold one and spare blades for a fiver.
When wrapping near or around small switches, I'd rather trim the vinyl to the edge of the opening rather than try and wrap around the edge.
it will lift as the edge is small and you can't make a flap on the other side large enough to stop it from lifting.
Yeah I had all the tools but unfortunately the biggest tool was doing the wrapping
It looked a bit too shiny anyway and I had second thoughts halfway through doing it so really it was just an excuse to get angry and screw it all up....
Funnily enough the same kind of thing happened earlier, I got 3 screen protectors for my tablet for £3 off fleabay ( i know ) and all 3 ended up screwed up into a ball
I don't think I have EVER managed to get one of those things to go on a phone or tablet perfectly without any bubbles or little bits of fluff underneath....