Once cut to size then line up the vinyl on the surface of the project, then peel around 10-15cm of the backing paper from the top of the film. Line up the sheet on the item and stick the top strip to the item. 
You can then pull the paperback down from the underside while using the squeegee on top to push the vinyl down on the surface. If you come across any bubbles just push them out with the squeegee to the closest side. 
If the project has curves or bends you can use heat from a heatgun to soften the vinyl and you can then stretch the film around the curve. Do an overlap behind the object if possible to keep it secure. When possible do a test with a cut off of the vinyl so you have practice before doing the larger item.
As these are thicker than normal vinyls we recommend using an adhesive promoter like 3M 94 Primer on all edges, bends and recesses to secure the vinyl for a longer lifespan. This primer should be available from your local 3M distributor or online from a local supplier.