Upgrading the mods by stickers

Hey all,

So i have this problem with some of my mods, paint goes off etc…
I decided it would be a great idea to get some stickers, but i couldn't find any stickers i like.
Instead i'm planning to order Vinyl stickers with texture and colors i want and than do the stickers myself.

I plan doing stickers for RX200, RX200S and NEBOX.

The thing is, cutting out the pieces from vinyl stickers can be a real pain in the butt,
anyone know any life hack to sign correct shapes on the vinyl for mods?