I switched from blue tape to clear shelf liner because of that. And I always sand before. I also have been using full sheet shipping labels, print pattern on the label, peal & stick to liner done! No more lift and no mess. I think Kevin put me on to that trick late last year. I also use a 4" squeegee that has felt over one side. I think body shops use these to put on wraps and stripes, works great for liner and patterns, Amazon.
I haven't heard the Shellac trick before, may have to try it.