In this sketch conversion, the artist used bitmap effects along with the vector image to add most of the shading. Bitmap effects can be used for some printing purposes such as digital printing, but not for silkscreen printing. They can be used to create a “blur” effect that is not available in the vector format, and gives an extra layer to the vector image.
If you need something with about as much detail vectorized, you should always get a quote and opinion first before proceeding.
You can upload a quote for a speedy and efficient process here: Here (no account required).