So a quick tutorial to installing the letter. I wrote formal instructions on the template. Install letters before installing cover.
First place 3/4 inch tape at the top of the cover and measure your halfway point.
Next cut out template and transfer it to cardboard. For this I found it best to tape it to cardboard. Then cutout the letters. Or just leave it as paper and use the paperr cutout for your tempalte. After cut out align the template center line with your center line on the tape.
Then proceed attaching the letters.
To attach tape to letters. Use isopropyl alcohol to clean the back of the letters. Then unroll and apply tape only as necessary. It is very important to keep the tape clean. Cut to length and attach to the letter. Press firmly. For best results let tape set after installation for 30 mins to allow adhesive to wet out. To peel plastic red coating. I found it best to use a fresh new razor blade. Then peel a corner on each price of tape. Then use tweezers to peel them all off.
Here is a picture of one of 1000 ways to attach the tape. I only provide enough to tape for the letters