Our ConClarity projector tape is a higher quality velour material. Other brands commonly use felt tape which has a tendency to be slightly reflective. We use velour as its rich black texture provides a much higher contrast. You could see photo example comparisons in the product photos as well as in the description.
We would recommend cutting edges at 45 degree after measuring for the corners of your screen project. Though the material makes overlaps unnoticeable, cutting 45 degrees on the corners would make it look more seamless.