Well I would suggest you grab a heat gun, with foam or the vynl, it's wicked handy for shaping. Most vynl will heat and go very soft and stretchy, which comes in handy for corners and pushing into gaps. But only use a low heat and quick passes over the area you intend to "bend". Too much heat will shrink the vynl and potentially ruin the adhesive so test before use.
A trick we use for applying where we are unsure and wish to prevent air bubbles is using soapy water.
If you are working on a fairly flat and hard surface with a whole piece of vynl, remove the backing with the vynl face down. Use a spray bottle with water and a few drops of dish washing liquid mixed in and lightly spray the vynl backing. Flip it over and line it up, use a plastic card/applicator and work from the middle out to either side. Push firmly but not heavily from the middle to top then down, this secures the vynl to the surface. Now
lift up a side until you reach the middle. Keep holding the side up. Let it slack a little so the vynl contacts the surface and start the top down motion again, firmly. This pushes the air/water out and leaves a smooth even surface. Take care to not keep the vynl too taught else you might rip through it. The soapy water should give you plenty of tackiness while allowing you to lift any areas up if you make an error.
BE CAREFUL when pulling up the vynl, if you have a brittle type or its cold enough it will tear and you will need to start over and remove the vynl before it sticks.
Using the stick and go method above dry can be done too, but I would recommend pulling back a small section of the backing paper (like 1/2 inch) first to stick on to the foam/whatever then slowly pull the backing away as you apply the vynl. It should give the same results but will stick permanately first go. It *should* also bend with the foam without issue, but once again
TEST before getting stuck into it.
Practice on off cuts or cheaper material of the same make before using that nice 3M metal stuff, $200 a metre is damn pricey. When you can work with gold leaf material that costs in excess of $1000 for half a metre and not bugger it up, you can be assured you did good
Not the best tutorial but it might help, plus I will come back to see if I can help
