Sketch Portraits - Line Art/Ink

Im looking for an artist/illustrator who can produce portraits in the same style as the attached samples. The style has to be as close to the sample as possible and can be produced in raster or vector format.

This will be an ongoing project, so there will be plenty of work. All proposals will be priced per piece.

Spam and Autocomplete offers will be ignored so please dont waste my time. Serious applicants only please.