Well I'm pretty useless at all three, but fortunately for TPF there have been many excellent artists grace its pages over the years.  Check out these examples:

1) PMcG as Number Six.  2) Patrick Cargill / PMcG as Number Two and Number Six, inspired by the episode "Hammer Into Anvil".  Both examples drawn by Steve Matt, and were both published originally in TPF October 1993.  3) TPF cover art imagining PMcG and the Beatles by Steve Matt, published December 1993.  4)  Portmeirion Parade by Steve McKay, published June 1993.

Patrick McGoohan by Sharon Worrall

Left to right: 1) PMcG as Number Six; published in the July 1996 issue of TPF, presented in colour here for the first time.  2) Pencil drawing of PMcG also from TPF July 1996.  3) PMcG as 'Red' from the film 'Hell Drivers' .

From the left: i} Leo McKern  as Number 2 by Elaine Sutton; ii} The Butler by Gaynor Ainscough; iii} PMcG by Steve Jones; iv} Alison ("Schizoid Man") by Barbara Lythgoe.  v} Battery Square/Prisoner Shop and vi} White Horses cottage by Barbara Lythgoe.