I only say that cause removing the tape is something that should be done before the paint dries. Paint has dried to the wall and the tape and if you think of paint as a uniform layer, what is happening now is that you are ripping the paint. To get the tape off cleanly now you need a single edge razor blade or xacto knife to slice the paint alone the edge of the tape for the entire length. Then there will be a strait edge when you remove the tape.