Step back from the wall. Up close, every mural looks like a mistake.

At arm’s length you see brush marks, overlaps and edges that look wrong, because you are seeing material rather than picture. Nothing is broken, you are simply standing at the wrong distance to judge it. The viewer will be across the street. Working close and assessing close is how people talk themselves out of work that is going fine.

Build stepping back into the process rather than treating it as a break. Every twenty minutes, walk to where the audience will stand and look from there. Take a photo on your phone too, since a small screen flattens the detail and shows you the shape.