PLEASE make sure to follow the instructions for the specific material you are applying ESPECIALLY the temperature when to pull off the mask, this may be the most critical step for successful application

Clear Vinyl and Solid Vinyl are two completely different materials/application steps

If you want to search youtube for application videos search for these specific materials(brand)

Solid Vinyl: Siser ColorPrint PU Matte 

Clear Vinyl: Stahs SuperTek Matte Clear

Glitter: Siser SparklePrint

Iridescent: Stahls ChromaTwill 

Also check out Siser's Blog for great tips & tricks and how to apply onto different types of items!