Make hobbyist PCBs with professional CAD tools by modifying "Design Rules"

Step 13 Finalizing the PCB design

At this point, there are some traces that are reasonably close together, and it might make sense to manually move them apart a bit more, and clean up some of the stranger things that the autorouter has done. And I can decide that I want this to be one of those edge-of-stage warning lights that stands on its own by virtue of the 9V battery, which means I should reposition some of the components a bit. I can move around the silkscreen so that I can use toner transfer for that too. I end up with this: