Adhesive Banners, Posters, Window Clings:
Always pay attention to measurements. "Eye-balling" when hanging can 'accentuate' even slight changes in height from one side to the other, especially on large pieces.
Clean and completely dry your surface before applying your product.
Start on one edge and smooth as you go to avoid any bubbling.
Large Banner Installation Tips:
For outdoor banners: Let the banner 'rest' fully extended in the sun for about an hour before hanging. This will help prevent it from stretching AFTER it is installed, and then 'sagging'
Depending on the material it will be installed on, using double sided to 'lightly secure' the banner first, will aid in the installation of a banner this size
Make sure it is installed completely taut on all sides, the extra 3" bleed should give you plenty of room to secure it around the edges
If any hardware is needed to install it taut, you MUST use large Washers/Screws, to prevent the vinyl from ripping under the tension. Do not use screws without washers, or staples, as this will most likely cause tearing.