Following is a basic guideline for installing vinyl logos/letters on a smooth non-porous surface (vehicles, glass, aluminum, etc.).  The smaller the decal, the easier the application.  The larger the decal, the easier it is to end up with a mess.  If you have questions on a specific installation, let us know and we'll offer free advice.  We also offer professional installation services at our location or yours.  Just give us a call for an installation quote.