These are some things you might need to make a record:
Shure SM-57 AKG C414 Royer 121 Some old guitar A beating heart
I had so many of these. As I was working in the machine I would realize I didn't have a mark I needed then I would go back to the ink, make the mark, scan it, continue working. At one point I was holding a piece of paper up to my screen and tracing...it worked out.