yeah.. imagine a pen line that looks great in your drawing, but shrink it down to 1/2 its thickness for reproduction, and it looks weak and thin. Things change when they are reduced in size, the way you read them changes.
Since the work for this one is already done, it might be a good idea to proof-print and be ready to ajust the art slightly if needed.
A good artist can do very detailed work and working oversize to compensate for clumsy linework doesn't always work. But the other thing is that it's more comfortable and natural for most artists to work fairly large and free. Thank goodness for digital drawing tools, we can use a combination of approaches to get the best results.