Susan's sculptures are cast by foundries from her original stone carvings or clay models into bronze or aluminium. 

She also casts her work herself into cast marble. A technique she developed early in her career, to make her sculptures more affordable. These are in three finishes: pure white marble; onynx (black) marble; amber (terracotta coloured) marble. 

Her method of painting in oil is mostly applied with a palette knife, which is similar to modelling a sculpture in clay. 

A fascination with colour is the driving force in her painting. How juxtapositions of certain colours creates different effects and mood changes.