First, get a scanner with good resolution. Position the comic carefully to avoid any distortion. Also, adjust the scanner settings for optimal image quality. And remember to handle the comics gently to prevent damage.
First off, you should have the right tools. Then, pay attention to details like cleaning up any noise or artifacts. Also, make sure the contrast and brightness are balanced to bring out the best in the scans. It takes some practice and patience.
One interesting glitch back story could be from a video game. For example, in an old racing game, there was a glitch where cars would sometimes drive through walls. It happened because of a miscalculation in the collision detection code. Programmers had to dig deep into the code to figure out how to fix it.
One scary glitch in the matrix story is about a person seeing the same stranger in completely different and unexpected places within a very short time. For example, first seeing the person in a crowded city street, then minutes later in a small, isolated alley on the other side of town as if they teleported there.