I had a client who had a shirt that they printed years ago and they wanted a reprint.  But they, unfortunately, did not have the artwork - only the shirt.  So I took the picture of the shirt they sent me, straightened out the design, and redrew the artwork in vectors. Here's what I had to work with:

Here's the in-progress redraw in vector format:

Here's the film output file we used to reprint the shirt:

Another happy client!  :)