What I discovered, was that I learned a lot from doing this!
As I tried to get the same results he got, I found I was learning about the decisions he made along the process, and it made me a much, much better inker.
Start with an ink artist you admire, select one of their works, and re-ink it in a digital drawing application. I think you can also do this with traditional materials. Just print out the original in, say, cyan, and then try to re-ink over it.
You don't have to strictly follow the original. It is meant to be a learning exercise, but you remain in control.
Do not share the results unless it is copyright-free material in the public domain. Otherwise, you might be infringing on someone's copyright. But I found I learned a huge amount by doing this.