As part of her undergraduate studies at the National Art School, Sydney, O’Sullivan spent a semester on exchange at the Glasgow School of Art, Scotland, where she learnt to refine a number of industrial ceramic processes such as designing and printing decals, plaster mode / mould making and slip casting. These skills have stayed with her and form the foundations of her current practice. O’Sullivan focused her 2012 Masters of Fine Art research project on Australian imagery on porcelain. During this study she undertook a three month internship at a remote indigenous Art Centre in Ikuntji ,NT.