Details of the campaign (as the formal proposal submitted to Salisbury City Council) are here. The suggested sculptor is (as you might have guessed) Paul Kidby. His notes, as part of the proposal, are worth reading.

There is the possibility to add some Nac Mac Feegles(Scottish-style pixies from Pratchett’s writing)to the sculpture which would add an element of humour and surprise to the piece.  I think these Feegles would be best placed behind Terry’s feet so they only visible when walking to the back of the sculpture.  I think they should be doing something mischievous such as prising the letters off the base and carrying them off – or similar.  These small characters would bring an aspect of his Discworld creation directly into the overall piece.

All in all I would hope the sculpture would be unsentimental and a happy depiction of the author that celebrates his achievements and brings pride to the people of Salisbury.

This would be fabulous: I hope Salisbury City Council agrees.

ETA: It also occurs to me that they’d better cast plenty extra of the Nac Mac Feegles, as people will be constantly stealing them the way they keep stealing the Ugly Duckling off the Hans Christian Andersen statue in Central Park.